Add Release Note (bug): The git credential-manager --help command previously would not find a page to display in the web browser, [which has been fixed](https://github.com/git-for-windows/build-extra/pull/542).

Add Release Note (bug): The git credential-manager --help command previously would not find a page to display in the web browser, [which has been fixed](https://github.com/git-for-windows/build-extra/pull/542). #97