DOCS-16363 Document killedDueToMaxTimeMSExpired under serverStatus (#5193)

* DOCS-16363 Document killedDueToMaxTimeMSExpired under serverStatus

* add to TOC

* wording

* build error

Author: ajhuh-mdb

source/reference/command/serverStatus.txt

@@ -1629,6 +1629,7 @@ metrics
       },
       operation : {
          killedDueToClientDisconnect : Long("<num>"),  // Added in MongoDB 7.1
+         killedDueToMaxTimeMSExpired : Long("<num>"),  // Added in MongoDB 7.2 
          numConnectionNetworkTimeouts : Long("<num>"),  // Added in MongoDB 6.3
          scanAndOrder : Long("<num>"),
          totalTimeWaitingBeforeConnectionTimeoutMillis : Long("<num>"),  // Added in MongoDB 6.3
@@ -2140,6 +2141,12 @@ metrics
    Total number of operations cancelled before completion 
    because the client disconnected.
 
+.. serverstatus:: metrics.operation.killedDueToMaxTimeMSExpired
+
+   .. versionadded:: 7.2
+
+   Total number of operations that timed out before completion.
+
 .. serverstatus:: metrics.operation.numConnectionNetworkTimeouts
 
    .. versionadded:: 6.3

source/release-notes.txt

@@ -77,6 +77,7 @@ EOL'ed Releases
    :maxdepth: 1
    :hidden:
 
+   /release-notes/7.2
    /release-notes/7.1
    /release-notes/7.0
    /release-notes/6.3

source/release-notes/7.2.txt

@@ -39,6 +39,7 @@ Database Validation on ``mongos`` Aggregation Queries
 Starting in MongoDB 7.2, the :dbcommand:`serverStatus` command and the
 :method:`db.serverStatus()` method outputs include the following new metrics:
 
+- :serverstatus:`metrics.operation.killedDueToMaxTimeMSExpired`
 - :serverstatus:`readPreferenceCounters`
 
 .. toctree::