Convert usage of GIT and Git into git

Convert usage of GIT and Git into git.

Signed-off-by: Christian Meder <chris@absolutegiganten.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
diff --git a/Documentation/git-http-fetch.txt b/Documentation/git-http-fetch.txt
index d7b5919..088624f 100644
--- a/Documentation/git-http-fetch.txt
+++ b/Documentation/git-http-fetch.txt
@@ -3,7 +3,7 @@
 
 NAME
 ----
-git-http-fetch - Downloads a remote GIT repository via HTTP
+git-http-fetch - Downloads a remote git repository via HTTP
 
 
 SYNOPSIS
@@ -12,7 +12,7 @@
 
 DESCRIPTION
 -----------
-Downloads a remote GIT repository via HTTP.
+Downloads a remote git repository via HTTP.
 
 -c::
 	Get the commit objects.