Sync with maint
authorJunio C Hamano <gitster@pobox.com>
Tue, 7 Oct 2014 20:41:03 +0000 (13:41 -0700)
committerJunio C Hamano <gitster@pobox.com>
Tue, 7 Oct 2014 20:41:03 +0000 (13:41 -0700)
* maint:
git-tag.txt: Add a missing hyphen to `-s`

Trivial merge