Credits @glyph for their contribution

about.html

@@ -70,11 +70,12 @@ <h3 id="improvements-and-contributors">Improvements & Contributors</h3>
           As this site is versioned in GitHub, you can submit PRs to correct, update, or modify this site. To be totally honest: I set that up for myself, not anyone else, so it'd be harder to lose the files when changing systems etc. I was not expecting anyone to contribute fixes to a random site on the interwebs. I'm surprised and thankful to find that there are folks who give a damn, and not only found an issue but bothered to read all this to find the source and put in a correction!
         </p>
         <p>
-          Shoutout to these kind folks on GitHub who've improved this site with corrections:
+          Shoutout to these kind folks on GitHub who've improved this site:
         </p>
         <ul>
         <li><a href="https://github.com/aadnehovda">aadnehovda</a> - fixed notation of IPv6 ULA prefix in faq.html (error made in 2015!)</li>
         <li><a href="https://github.com/NetaliDev">NetaliDev</a> - fixed typo in RFC number in index.html (error made in 2022!)</li>
+        <li><a href="https://github.com/glyph">glyph</a> - made ULAs monospaced and added color to create more visual interest</li>
         </ul>
         <h3 id="post-spammer-owned-domains">Post-Spammer-Owned Domains</h3>
         <p>