Update public-metrics-reference.adoc (#870)

Feediver1 · web-flow · commit 1f035c108d31 · 2024-12-02T08:45:09.000-06:00
diff --git a/modules/reference/pages/public-metrics-reference.adoc b/modules/reference/pages/public-metrics-reference.adoc
@@ -208,7 +208,7 @@ The low watermark for available memory at process start.
 
 === redpanda_memory_free_memory
 
-Available memory in bytes.
+Total amount of unallocated memory for a CPU shard (core), in bytes.
 
 *Type*: gauge
 
