config.txt: move gui-config.txt to config/

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

Documentation/config.txt

diff --git a/Documentation/config.txt b/Documentation/config.txt
index f52b898..093a71e 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -343,7 +343,7 @@
 
 include::config/gpg.txt[]
 
-include::gui-config.txt[]
+include::config/gui.txt[]
 
 guitool.<name>.cmd::
 	Specifies the shell command line to execute when the corresponding item

Documentation/config/gui.txt

diff --git a/Documentation/gui-config.txt b/Documentation/config/gui.txt
similarity index 100%
rename from Documentation/gui-config.txt
rename to Documentation/config/gui.txt