Documentation: clarify mergeoptions description

Sounds better this way, at least to my ears.  ("The syntax and
supported options of git merge" is a plural noun.  "the same"
instead of "equal" sounds less technical and seems to convey
the meaning better here.)

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: jrn

Documentation/config.txt

@@ -539,7 +539,7 @@ branch.<name>.merge::
 
 branch.<name>.mergeoptions::
 	Sets default options for merging into branch <name>. The syntax and
-	supported options are equal to that of linkgit:git-merge[1], but
+	supported options are the same as those of linkgit:git-merge[1], but
 	option values containing whitespace characters are currently not
 	supported.
 

Documentation/git-merge.txt

@@ -50,8 +50,8 @@ include::merge-config.txt[]
 
 branch.<name>.mergeoptions::
 	Sets default options for merging into branch <name>. The syntax and
-	supported options are equal to that of 'git-merge', but option values
-	containing whitespace characters are currently not supported.
+	supported options are the same as those of 'git merge', but option
+	values containing whitespace characters are currently not supported.
 
 HOW MERGE WORKS
 ---------------