docs: add kx-chen as a contributor for code (#892)

* docs: update README.md

* docs: update .all-contributorsrc

---------

Co-authored-by: allcontributors[bot] <46447321+allcontributors[bot]@users.noreply.github.com>

.all-contributorsrc

@@ -72,6 +72,15 @@
       "contributions": [
         "code"
       ]
+    },
+    {
+      "login": "kx-chen",
+      "name": "Kai Chen",
+      "avatar_url": "https://avatars.githubusercontent.com/u/22359229?v=4",
+      "profile": "https://www.linkedin.com/in/kai-xing-chen",
+      "contributions": [
+        "code"
+      ]
     }
   ]
 }

README.md

@@ -50,6 +50,7 @@ Licensed under [MIT](LICENSE). Copyright (c) 2024 Slack.
       <td align="center" valign="top" width="14.28%"><a href="http://www.linkedin.com/in/mansu"><img src="https://avatars.githubusercontent.com/u/93836?v=4?s=100" width="100px;" alt="Suman Karumuri"/><br /><sub><b>Suman Karumuri</b></sub></a><br /><a href="#code-mansu" title="Code">💻</a> <a href="#review-mansu" title="Reviewed Pull Requests">👀</a> <a href="#ideas-mansu" title="Ideas, Planning, & Feedback">🤔</a> <a href="#talk-mansu" title="Talks">📢</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/ermontross"><img src="https://avatars.githubusercontent.com/u/10778883?v=4?s=100" width="100px;" alt="Emma Montross"/><br /><sub><b>Emma Montross</b></sub></a><br /><a href="#plugin-ermontross" title="Plugin/utility libraries">🔌</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/danhermann"><img src="https://avatars.githubusercontent.com/u/22777892?v=4?s=100" width="100px;" alt="Dan Hermann"/><br /><sub><b>Dan Hermann</b></sub></a><br /><a href="#code-danhermann" title="Code">💻</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://www.linkedin.com/in/kai-xing-chen"><img src="https://avatars.githubusercontent.com/u/22359229?v=4?s=100" width="100px;" alt="Kai Chen"/><br /><sub><b>Kai Chen</b></sub></a><br /><a href="#code-kx-chen" title="Code">💻</a></td>
     </tr>
   </tbody>
 </table>