docs: update README.md

Author: allcontributors[bot]

README.md

@@ -78,6 +78,7 @@ your feedback!
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       <td align="center" valign="top" width="14.28%"><a href="https://github.com/scip92"><img src="https://avatars.githubusercontent.com/u/15237896?v=4?s=100" width="100px;" alt="Max"/><br /><sub><b>Max</b></sub></a><br /><a href="#code-scip92" title="Code">💻</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/HerbertKarajan"><img src="https://avatars.githubusercontent.com/u/20851191?v=4?s=100" width="100px;" alt="Karajan"/><br /><sub><b>Karajan</b></sub></a><br /><a href="#code-HerbertKarajan" title="Code">💻</a></td>
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