DOCS-436 serverStatus.dur documentation

Author: kay-kim

source/reference/server-status.txt

@@ -1043,8 +1043,8 @@ Journaling
 
    The :status:`dur.commitsInWriteLock` provides a count of the commits
    that occurred while a write lock was held. Commits in a write lock
-   are undesirable and may indicate a capacity limitation for the
-   database.
+   indicate a MongoDB node under a heavy write load and call for
+   further diagnosis.
 
 .. status:: dur.earlyCommits