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

Co-authored-by: Pratyoy Mukhopadhyay <35388175+pmmukh@users.noreply.github.com>

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.