backport of commit 69440d0

Author: akshya96

website/content/api-docs/system/internal-counters.mdx

@@ -195,7 +195,8 @@ $ curl \
 
 ## Partial Month Client Count
 
-This endpoint returns the number of clients per namespace, as the sum of clients calculated from the use 
+This endpoint returns the number of clients per namespace for the current month, as the sum of clients calculated from the use 
+
 of active entities and non-entity tokens.
 An "active entity" is a distinct entity that has created one or more tokens in the given time period.
 A "non-entity token" is a token with no attached entity ID.