Fix Git capitalization in gemspec
Fix Git capitalization in gemspec

Change-Id: Id4b55244e9d2d26dfabfcbe3a62de1a84d570b00
Reviewed-on: https://gerrit.causes.com/22784
Tested-by: Aiden Scandella <1faf1e8390cdac9204f160c35828cc423b7acd7b@causes.com>
Reviewed-by: Joe Lencioni <1dd72cf724deaab5db236f616560fc7067b734e1@causes.com>

gnagel/overcommit,oxocode/overcommit,TheSooth/overcommit,blech75/overcommit,gnagel/overcommit,TheSooth/overcommit,blech75/overcommit,oxocode/overcommit