config.txt: move instaweb.* 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

@@ -359,26 +359,7 @@ include::config/index.txt[]
 
 include::config/init.txt[]
 
-instaweb.browser::
-	Specify the program that will be used to browse your working
-	repository in gitweb. See linkgit:git-instaweb[1].
-
-instaweb.httpd::
-	The HTTP daemon command-line to start gitweb on your working
-	repository. See linkgit:git-instaweb[1].
-
-instaweb.local::
-	If true the web server started by linkgit:git-instaweb[1] will
-	be bound to the local IP (127.0.0.1).
-
-instaweb.modulePath::
-	The default module path for linkgit:git-instaweb[1] to use
-	instead of /usr/lib/apache2/modules.  Only used if httpd
-	is Apache.
-
-instaweb.port::
-	The port number to bind the gitweb httpd to. See
-	linkgit:git-instaweb[1].
+include::config/instaweb.txt[]
 
 interactive.singleKey::
 	In interactive commands, allow the user to provide one-letter

Documentation/config/instaweb.txt

@@ -0,0 +1,20 @@
+instaweb.browser::
+	Specify the program that will be used to browse your working
+	repository in gitweb. See linkgit:git-instaweb[1].
+
+instaweb.httpd::
+	The HTTP daemon command-line to start gitweb on your working
+	repository. See linkgit:git-instaweb[1].
+
+instaweb.local::
+	If true the web server started by linkgit:git-instaweb[1] will
+	be bound to the local IP (127.0.0.1).
+
+instaweb.modulePath::
+	The default module path for linkgit:git-instaweb[1] to use
+	instead of /usr/lib/apache2/modules.  Only used if httpd
+	is Apache.
+
+instaweb.port::
+	The port number to bind the gitweb httpd to. See
+	linkgit:git-instaweb[1].