Merge branch 'sg/merge-summary-config' into maint

Doc updates.

* sg/merge-summary-config:
  Documentation: include 'merge.branchdesc' for merge and config as well

Documentation/fmt-merge-msg-config.txt

+merge.branchdesc::
+	In addition to branch names, populate the log message with
+	the branch description text associated with them.  Defaults
+	to false.
+
+merge.log::
+	In addition to branch names, populate the log message with at
+	most the specified number of one-line descriptions from the
+	actual commits that are being merged.  Defaults to false, and
+	true is a synonym for 20.

Documentation/git-fmt-merge-msg.txt

@@ -51,17 +51,7 @@ OPTIONS
 
 CONFIGURATION
 -------------
-
-merge.branchdesc::
-	In addition to branch names, populate the log message with
-	the branch description text associated with them.  Defaults
-	to false.
-
-merge.log::
-	In addition to branch names, populate the log message with at
-	most the specified number of one-line descriptions from the
-	actual commits that are being merged.  Defaults to false, and
-	true is a synonym for 20.
+include::fmt-merge-msg-config.txt[]
 
 merge.summary::
 	Synonym to `merge.log`; this is deprecated and will be removed in

Documentation/merge-config.txt

@@ -26,11 +26,7 @@ merge.ff::
 	allowed (equivalent to giving the `--ff-only` option from the
 	command line).
 
-merge.log::
-	In addition to branch names, populate the log message with at
-	most the specified number of one-line descriptions from the
-	actual commits that are being merged.  Defaults to false, and
-	true is a synonym for 20.
+include::fmt-merge-msg-config.txt[]
 
 merge.renameLimit::
 	The number of files to consider when performing rename detection