Fix github screenshot
Change the screenshot to the 2008 UI.
Captured from: https://web.archive.org/web/20080902010704/http://github.com/git/git/tree/master
Edited by Gabriel Mazetto
Change the screenshot to the 2008 UI.
Captured from: https://web.archive.org/web/20080902010704/http://github.com/git/git/tree/master