Merge pull request #56696 from subhtk/OCPBUG1883

OCP1883: Removed deprecated metric in defragmenting etcd data

Author: mjpytlak

modules/etcd-defrag.adoc

@@ -13,7 +13,7 @@ Monitor these key metrics:
 
 * `etcd_server_quota_backend_bytes`, which is the current quota limit
 * `etcd_mvcc_db_total_size_in_use_in_bytes`, which indicates the actual database usage after a history compaction
-* `etcd_debugging_mvcc_db_total_size_in_bytes`, which shows the database size, including free space waiting for defragmentation
+* `etcd_mvcc_db_total_size_in_bytes`, which shows the database size, including free space waiting for defragmentation
 
 Defragment etcd data to reclaim disk space after events that cause disk fragmentation, such as etcd history compaction.