git-push: fix link in man page
git-push: fix link in man page

Signed-off-by: Tony Finch <348a3c4a81ea6081e50dd1888d577fda55d8e4f6@dotat.at>
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