[chore][receiver/expvarreceiver] sort metadata.yaml entries (open-telemetry#43463)

#### Description

Sort metadata.yaml file in preparation for sort validation using
mdatagen. Context:
open-telemetry/opentelemetry-collector#13782

Signed-off-by: Paulo Dias <[email protected]>

Author: paulojmdias

receiver/expvarreceiver/metadata.yaml

@@ -9,21 +9,9 @@ status:
     active: [jamesmoessis, MovieStoreGuy]
 
 metrics:
-  process.runtime.memstats.total_alloc:
-    enabled: false
-    description: Cumulative bytes allocated for heap objects.
-    stability:
-      level: development
-    extended_documentation: As defined by https://pkg.go.dev/runtime#MemStats
-    unit: By
-    sum:
-      value_type: int
-      monotonic: true
-      aggregation_temporality: cumulative
-
-  process.runtime.memstats.sys:
+  process.runtime.memstats.buck_hash_sys:
     enabled: true
-    description: Total bytes of memory obtained from the OS.
+    description: Bytes of memory in profiling bucket hash tables.
     stability:
       level: development
     extended_documentation: As defined by https://pkg.go.dev/runtime#MemStats
@@ -33,40 +21,37 @@ metrics:
       monotonic: false
       aggregation_temporality: cumulative
 
-  process.runtime.memstats.lookups:
-    enabled: false
-    description: Number of pointer lookups performed by the runtime.
+  process.runtime.memstats.frees:
+    enabled: true
+    description: Cumulative count of heap objects freed.
     stability:
       level: development
     extended_documentation: As defined by https://pkg.go.dev/runtime#MemStats
-    unit: "{lookups}"
+    unit: "{objects}"
     sum:
       value_type: int
-      monotonic: false
+      monotonic: true
       aggregation_temporality: cumulative
 
-  process.runtime.memstats.mallocs:
+  process.runtime.memstats.gc_cpu_fraction:
     enabled: true
-    description: Cumulative count of heap objects allocated.
+    description: The fraction of this program's available CPU time used by the GC since the program started.
     stability:
       level: development
     extended_documentation: As defined by https://pkg.go.dev/runtime#MemStats
-    unit: "{objects}"
-    sum:
-      value_type: int
-      monotonic: true
-      aggregation_temporality: cumulative
-
-  process.runtime.memstats.frees:
+    unit: "1"
+    gauge:
+      value_type: double
+  process.runtime.memstats.gc_sys:
     enabled: true
-    description: Cumulative count of heap objects freed.
+    description: Bytes of memory in garbage collection metadata.
     stability:
       level: development
     extended_documentation: As defined by https://pkg.go.dev/runtime#MemStats
-    unit: "{objects}"
+    unit: By
     sum:
       value_type: int
-      monotonic: true
+      monotonic: false
       aggregation_temporality: cumulative
 
   process.runtime.memstats.heap_alloc:
@@ -81,9 +66,9 @@ metrics:
       monotonic: false
       aggregation_temporality: cumulative
 
-  process.runtime.memstats.heap_sys:
+  process.runtime.memstats.heap_idle:
     enabled: true
-    description: Bytes of heap memory obtained by the OS.
+    description: Bytes in idle (unused) spans.
     stability:
       level: development
     extended_documentation: As defined by https://pkg.go.dev/runtime#MemStats
@@ -93,9 +78,9 @@ metrics:
       monotonic: false
       aggregation_temporality: cumulative
 
-  process.runtime.memstats.heap_idle:
+  process.runtime.memstats.heap_inuse:
     enabled: true
-    description: Bytes in idle (unused) spans.
+    description: Bytes in in-use spans.
     stability:
       level: development
     extended_documentation: As defined by https://pkg.go.dev/runtime#MemStats
@@ -105,13 +90,13 @@ metrics:
       monotonic: false
       aggregation_temporality: cumulative
 
-  process.runtime.memstats.heap_inuse:
+  process.runtime.memstats.heap_objects:
     enabled: true
-    description: Bytes in in-use spans.
+    description: Number of allocated heap objects.
     stability:
       level: development
     extended_documentation: As defined by https://pkg.go.dev/runtime#MemStats
-    unit: By
+    unit: "{objects}"
     sum:
       value_type: int
       monotonic: false
@@ -129,45 +114,55 @@ metrics:
       monotonic: false
       aggregation_temporality: cumulative
 
-  process.runtime.memstats.heap_objects:
+  process.runtime.memstats.heap_sys:
     enabled: true
-    description: Number of allocated heap objects.
+    description: Bytes of heap memory obtained by the OS.
     stability:
       level: development
     extended_documentation: As defined by https://pkg.go.dev/runtime#MemStats
-    unit: "{objects}"
+    unit: By
     sum:
       value_type: int
       monotonic: false
       aggregation_temporality: cumulative
 
-  process.runtime.memstats.stack_inuse:
+  process.runtime.memstats.last_pause:
     enabled: true
-    description: Bytes in stack spans.
+    description: The most recent stop-the-world pause time.
     stability:
       level: development
     extended_documentation: As defined by https://pkg.go.dev/runtime#MemStats
-    unit: By
+    unit: ns
+    gauge:
+      value_type: int
+
+  process.runtime.memstats.lookups:
+    enabled: false
+    description: Number of pointer lookups performed by the runtime.
+    stability:
+      level: development
+    extended_documentation: As defined by https://pkg.go.dev/runtime#MemStats
+    unit: "{lookups}"
     sum:
       value_type: int
       monotonic: false
       aggregation_temporality: cumulative
 
-  process.runtime.memstats.stack_sys:
+  process.runtime.memstats.mallocs:
     enabled: true
-    description: Bytes of stack memory obtained from the OS.
+    description: Cumulative count of heap objects allocated.
     stability:
       level: development
     extended_documentation: As defined by https://pkg.go.dev/runtime#MemStats
-    unit: By
+    unit: "{objects}"
     sum:
       value_type: int
-      monotonic: false
+      monotonic: true
       aggregation_temporality: cumulative
 
-  process.runtime.memstats.mspan_inuse:
+  process.runtime.memstats.mcache_inuse:
     enabled: true
-    description: Bytes of allocated mspan structures.
+    description: Bytes of allocated mcache structures.
     stability:
       level: development
     extended_documentation: As defined by https://pkg.go.dev/runtime#MemStats
@@ -177,9 +172,9 @@ metrics:
       monotonic: false
       aggregation_temporality: cumulative
 
-  process.runtime.memstats.mspan_sys:
+  process.runtime.memstats.mcache_sys:
     enabled: true
-    description: Bytes of memory obtained from the OS for mspan structures.
+    description: Bytes of memory obtained from the OS for mcache structures.
     stability:
       level: development
     extended_documentation: As defined by https://pkg.go.dev/runtime#MemStats
@@ -189,9 +184,9 @@ metrics:
       monotonic: false
       aggregation_temporality: cumulative
 
-  process.runtime.memstats.mcache_inuse:
+  process.runtime.memstats.mspan_inuse:
     enabled: true
-    description: Bytes of allocated mcache structures.
+    description: Bytes of allocated mspan structures.
     stability:
       level: development
     extended_documentation: As defined by https://pkg.go.dev/runtime#MemStats
@@ -201,9 +196,9 @@ metrics:
       monotonic: false
       aggregation_temporality: cumulative
 
-  process.runtime.memstats.mcache_sys:
+  process.runtime.memstats.mspan_sys:
     enabled: true
-    description: Bytes of memory obtained from the OS for mcache structures.
+    description: Bytes of memory obtained from the OS for mspan structures.
     stability:
       level: development
     extended_documentation: As defined by https://pkg.go.dev/runtime#MemStats
@@ -213,9 +208,9 @@ metrics:
       monotonic: false
       aggregation_temporality: cumulative
 
-  process.runtime.memstats.buck_hash_sys:
+  process.runtime.memstats.next_gc:
     enabled: true
-    description: Bytes of memory in profiling bucket hash tables.
+    description: The target heap size of the next GC cycle.
     stability:
       level: development
     extended_documentation: As defined by https://pkg.go.dev/runtime#MemStats
@@ -225,33 +220,33 @@ metrics:
       monotonic: false
       aggregation_temporality: cumulative
 
-  process.runtime.memstats.gc_sys:
+  process.runtime.memstats.num_forced_gc:
     enabled: true
-    description: Bytes of memory in garbage collection metadata.
+    description: Number of GC cycles that were forced by the application calling the GC function.
     stability:
       level: development
     extended_documentation: As defined by https://pkg.go.dev/runtime#MemStats
     unit: By
     sum:
       value_type: int
-      monotonic: false
+      monotonic: true
       aggregation_temporality: cumulative
 
-  process.runtime.memstats.other_sys:
+  process.runtime.memstats.num_gc:
     enabled: true
-    description: Bytes of memory in miscellaneous off-heap runtime allocations.
+    description: Number of completed GC cycles.
     stability:
       level: development
     extended_documentation: As defined by https://pkg.go.dev/runtime#MemStats
     unit: By
     sum:
       value_type: int
-      monotonic: false
+      monotonic: true
       aggregation_temporality: cumulative
 
-  process.runtime.memstats.next_gc:
+  process.runtime.memstats.other_sys:
     enabled: true
-    description: The target heap size of the next GC cycle.
+    description: Bytes of memory in miscellaneous off-heap runtime allocations.
     stability:
       level: development
     extended_documentation: As defined by https://pkg.go.dev/runtime#MemStats
@@ -273,46 +268,50 @@ metrics:
       monotonic: true
       aggregation_temporality: cumulative
 
-  process.runtime.memstats.last_pause:
+  process.runtime.memstats.stack_inuse:
     enabled: true
-    description: The most recent stop-the-world pause time.
+    description: Bytes in stack spans.
     stability:
       level: development
     extended_documentation: As defined by https://pkg.go.dev/runtime#MemStats
-    unit: ns
-    gauge:
+    unit: By
+    sum:
       value_type: int
+      monotonic: false
+      aggregation_temporality: cumulative
 
-  process.runtime.memstats.num_gc:
+  process.runtime.memstats.stack_sys:
     enabled: true
-    description: Number of completed GC cycles.
+    description: Bytes of stack memory obtained from the OS.
     stability:
       level: development
     extended_documentation: As defined by https://pkg.go.dev/runtime#MemStats
     unit: By
     sum:
       value_type: int
-      monotonic: true
+      monotonic: false
       aggregation_temporality: cumulative
 
-  process.runtime.memstats.num_forced_gc:
+  process.runtime.memstats.sys:
     enabled: true
-    description: Number of GC cycles that were forced by the application calling the GC function.
+    description: Total bytes of memory obtained from the OS.
     stability:
       level: development
     extended_documentation: As defined by https://pkg.go.dev/runtime#MemStats
     unit: By
     sum:
       value_type: int
-      monotonic: true
+      monotonic: false
       aggregation_temporality: cumulative
 
-  process.runtime.memstats.gc_cpu_fraction:
-    enabled: true
-    description: The fraction of this program's available CPU time used by the GC since the program started.
+  process.runtime.memstats.total_alloc:
+    enabled: false
+    description: Cumulative bytes allocated for heap objects.
     stability:
       level: development
     extended_documentation: As defined by https://pkg.go.dev/runtime#MemStats
-    unit: "1"
-    gauge:
-      value_type: double
+    unit: By
+    sum:
+      value_type: int
+      monotonic: true
+      aggregation_temporality: cumulative