DOCSP-28680 Add Restart Warning for diagnosticDataCollectionDirectoryPath (#2753) (#2851)

* DOCSP-28680 Add Restart Warning for diagnosticDataCollectionDirectoryPath

* copy cleanup

* IF feedback

* move warning message

Author: ajhuh-mdb

source/reference/parameters.txt

@@ -2120,6 +2120,14 @@ The following parameters support diagnostic data capture (FTDC):
 
    |mongos-only|
 
+   .. warning:: 
+
+      If :ref:`Full Time Diagnostic Data Capture (FTDC) <ftdc-stub>` is 
+      disabled with :parameter:`diagnosticDataCollectionEnabled` or if 
+      :setting:`systemLog.destination` is set to ``syslog``, you must restart 
+      :binary:`~bin.mongos` after setting 
+      ``diagnosticDataCollectionDirectoryPath``.
+
    Specify the directory for the diagnostic directory for
    :binary:`~bin.mongos`. If the directory does not exist,
    :binary:`~bin.mongos` creates the directory.
@@ -2133,15 +2141,11 @@ The following parameters support diagnostic data capture (FTDC):
    /var/log/mongodb/mongos.log.201708015``, then the diagnostic data
    directory is ``/var/log/mongodb/mongos.diagnostic.data/``.
 
-   .. important::
-
-      If the :binary:`~bin.mongos` cannot create the specified
-      directory, the diagnostic data capture is disabled for that
-      instance. This is often caused by:
-
-      - a file with the same name already exists in the path, or
-
-      - the process does not have permissions to create the directory.
+   If the :binary:`~bin.mongos` cannot create the specified directory, the 
+   diagnostic data capture is disabled for that instance. :binary:`~bin.mongos`
+   may not be able to create the specified directory if a file with the same 
+   name already exists in the path or if the process does not have permissions 
+   to create the directory.
 
 .. parameter:: diagnosticDataCollectionDirectorySizeMB