git-submodule: remove extraneous space from error message
git-submodule: remove extraneous space from error message

Signed-off-by: Alex Henrie <139449a27381270391752f9e0993fccac55fea0e@gmail.com>
Acked-by: Chris Packham <f6ce1e3a84979f774d08cfcf0135fdab4b721a81@gmail.com>
Signed-off-by: Junio C Hamano <a6723cc3f76163bf7adb636a73ac3b0ceb3e6b9b@pobox.com>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git