config.txt: move man.* to a separate file

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/config.txt

@@ -369,18 +369,7 @@ include::config/mailinfo.txt[]
 
 include::config/mailmap.txt[]
 
-man.viewer::
-	Specify the programs that may be used to display help in the
-	'man' format. See linkgit:git-help[1].
-
-man.<tool>.cmd::
-	Specify the command to invoke the specified man viewer. The
-	specified command is evaluated in shell with the man page
-	passed as argument. (See linkgit:git-help[1].)
-
-man.<tool>.path::
-	Override the path for the given tool that may be used to
-	display help in the 'man' format. See linkgit:git-help[1].
+include::config/man.txt[]
 
 include::merge-config.txt[]
 

Documentation/config/man.txt

@@ -0,0 +1,12 @@
+man.viewer::
+	Specify the programs that may be used to display help in the
+	'man' format. See linkgit:git-help[1].
+
+man.<tool>.cmd::
+	Specify the command to invoke the specified man viewer. The
+	specified command is evaluated in shell with the man page
+	passed as argument. (See linkgit:git-help[1].)
+
+man.<tool>.path::
+	Override the path for the given tool that may be used to
+	display help in the 'man' format. See linkgit:git-help[1].