docs: add kakwok as a contributor for code (#663)

* docs: update README.md [skip ci]

* docs: update .all-contributorsrc [skip ci]

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

Author: allcontributors[bot]

.all-contributorsrc

@@ -387,6 +387,15 @@
       "contributions": [
         "code"
       ]
+    },
+    {
+      "login": "kakwok",
+      "name": "kakwok",
+      "avatar_url": "https://avatars.githubusercontent.com/u/12798013?v=4",
+      "profile": "https://github.com/kakwok",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -149,6 +149,7 @@ Thanks especially to the gracious help of Uproot contributors (including the [or
     <td align="center"><a href="http://blog.kushkothari.in"><img src="https://avatars.githubusercontent.com/u/53650538?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Kush Kothari</b></sub></a><br /><a href="https://github.com/scikit-hep/uproot5/commits?author=kkothari2001" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/aryan26roy"><img src="https://avatars.githubusercontent.com/u/50577809?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Aryan Roy</b></sub></a><br /><a href="https://github.com/scikit-hep/uproot5/commits?author=aryan26roy" title="Code">💻</a></td>
     <td align="center"><a href="http://blog.jling.dev"><img src="https://avatars.githubusercontent.com/u/5306213?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Jerry Ling</b></sub></a><br /><a href="https://github.com/scikit-hep/uproot5/commits?author=Moelf" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/kakwok"><img src="https://avatars.githubusercontent.com/u/12798013?v=4?s=100" width="100px;" alt=""/><br /><sub><b>kakwok</b></sub></a><br /><a href="https://github.com/scikit-hep/uproot5/commits?author=kakwok" title="Code">💻</a></td>
   </tr>
 </table>