This PR is to fix the following the rpmlint warning about the outdated URL.
rubygem-thin.src: W: invalid-url URL: http://code.macournoyer.com/thin/ <urlopen error [Errno -2] Name or service not known>
The value should be a valid, public HTTP, HTTPS, or FTP URL.
See this upstream commit for detail.
https://github.com/macournoyer/thin/commit/ff003f09e4fc338d5c7d4f6834257328a8f6aed5
I confirmed the warning was disappeared after fixing it.
If the review is okay, I will merge and build it.
If you don't need "bump" for build, the release this case, then there's no need to add changelog / change date. Also this message (fix URL) is concerning packaging only, IMHO it should be only in commit msg.