add tags for ex

Author: pabloem

x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/expression/function/aggregate/Delta.java

@@ -48,7 +48,7 @@ public class Delta extends TimeSeriesAggregateFunction implements OptionalArgume
         description = "Calculates the absolute change of a gauge field in a time window.",
         appliesTo = { @FunctionAppliesTo(lifeCycle = FunctionAppliesToLifecycle.PREVIEW, version = "9.2.0") },
         preview = true,
-        examples = { @Example(file = "k8s-timeseries-delta", tag = "*") },
+        examples = { @Example(file = "k8s-timeseries-delta", tag = "delta_ts_agg") },
         note = "Available with the [TS](/reference/query-languages/esql/commands/source-commands.md#esql-ts) command"
     )
     public Delta(Source source, @Param(name = "field", type = { "long", "integer", "double" }) Expression field) {

x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/expression/function/aggregate/Idelta.java

@@ -50,7 +50,7 @@ public class Idelta extends TimeSeriesAggregateFunction implements OptionalArgum
             + "This function is very similar to delta, but is more responsive to recent changes.",
         appliesTo = { @FunctionAppliesTo(lifeCycle = FunctionAppliesToLifecycle.PREVIEW, version = "9.2.0") },
         preview = true,
-        examples = { @Example(file = "k8s-timeseries-idelta", tag = "*") }
+        examples = { @Example(file = "k8s-timeseries-idelta", tag = "ts_command_v0") }
     )
     public Idelta(Source source, @Param(name = "field", type = { "long", "integer", "double" }) Expression field) {
         this(source, field, new UnresolvedAttribute(source, "@timestamp"));

x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/expression/function/aggregate/Increase.java

@@ -53,7 +53,7 @@ public class Increase extends TimeSeriesAggregateFunction implements OptionalArg
         description = "Calculates the absolute increase of a counter field in a time window.",
         appliesTo = { @FunctionAppliesTo(lifeCycle = FunctionAppliesToLifecycle.PREVIEW, version = "9.2.0") },
         preview = true,
-        examples = { @Example(file = "k8s-timeseries-increase", tag = "*") }
+        examples = { @Example(file = "k8s-timeseries-increase", tag = "increase") }
     )
     public Increase(
         Source source,

x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/expression/function/aggregate/Irate.java

@@ -49,7 +49,7 @@ public class Irate extends TimeSeriesAggregateFunction implements OptionalArgume
             + "This function is very similar to rate, but is more responsive to recent changes in the rate of increase.",
         appliesTo = { @FunctionAppliesTo(lifeCycle = FunctionAppliesToLifecycle.PREVIEW, version = "9.2.0") },
         preview = true,
-        examples = { @Example(file = "k8s-timeseries-irate", tag = "*") }
+        examples = { @Example(file = "k8s-timeseries-irate", tag = "ts_command_v0") }
     )
     public Irate(Source source, @Param(name = "field", type = { "counter_long", "counter_integer", "counter_double" }) Expression field) {
         this(source, field, new UnresolvedAttribute(source, "@timestamp"));