Fix comment

synapse/types/handlers/sliding_sync.py

@@ -158,7 +158,7 @@ class RoomResult:
                 name changes to mark the room as unread and bump it to the top. For
                 encrypted rooms, we just have to consider any activity as a bump because we
                 can't see the content and the client has to figure it out for themselves.
-                This is only included if there has been a change.
+                This may not be included if there hasn't been a change.
             joined_count: The number of users with membership of join, including the client's
                 own user ID. (same as sync `v2 m.joined_member_count`)
             invited_count: The number of users with membership of invite. (same as sync v2