GitHub repository banner update. * am/doc-github-contributiong-link-to-submittingpatches: .github/CONTRIBUTING.md: link to SubmittingPatches on git-scm.com
GitHub repository banner update. * am/doc-github-contributiong-link-to-submittingpatches: .github/CONTRIBUTING.md: link to SubmittingPatches on git-scm.com