Add comments into each of the function files to make them easier to find

modules/git/functions/git-submodule-move

@@ -5,6 +5,8 @@
 #   Sorin Ionescu <sorin.ionescu@gmail.com>
 #
 
+# function git-submodule-move {
+
 if ! is-true "$(git rev-parse --is-inside-work-tree 2> /dev/null)"; then
   print "$0: not a repository work tree: $PWD" >&2
   return 1
@@ -30,3 +32,5 @@ git-submodule-remove "$src"
 git submodule add "$url" "$dst"
 
 return 0
+
+# }