Reword the git explanation.

config/gitlab.yml.example

@@ -202,9 +202,9 @@ production: &base
   # Use the default values unless you really know what you are doing
   git:
     bin_path: /usr/bin/git
-    # Max size of a git object (e.g. a commit), in bytes
-    # This value can be increased if you have very large commits with git over ssh
-    # Git over http is limited by your webserver (for Nginx see lib/support/nginx/gitlab)
+    # The next value is the maximum memory size grit can use
+    # Given in number of bytes per git object (e.g. a commit)
+    # This value can be increased if you have very large commits
     max_size: 5242880 # 5.megabytes
     # Git timeout to read a commit, in seconds
     timeout: 10