docs: add oxalica as a contributor for code (#5182)

* docs: update README.md [skip ci]

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

---------

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

.all-contributorsrc

@@ -2188,6 +2188,15 @@
       "contributions": [
         "code"
       ]
+    },
+    {
+      "login": "oxalica",
+      "name": "oxalica",
+      "avatar_url": "https://avatars.githubusercontent.com/u/14816024?v=4",
+      "profile": "https://github.com/oxalica",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -849,6 +849,7 @@ Try these steps if you experience problems with coc.nvim:
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/itsf4llofstars"><img src="https://avatars.githubusercontent.com/u/90528743?v=4?s=50" width="50px;" alt="itsf4llofstars"/><br /><sub><b>itsf4llofstars</b></sub></a><br /><a href="https://github.com/neoclide/coc.nvim/commits?author=itsf4llofstars" title="Documentation">📖</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/brainwo"><img src="https://avatars.githubusercontent.com/u/45139213?v=4?s=50" width="50px;" alt="Brian Wo"/><br /><sub><b>Brian Wo</b></sub></a><br /><a href="https://github.com/neoclide/coc.nvim/commits?author=brainwo" title="Documentation">📖</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://wsdjeg.net/"><img src="https://avatars.githubusercontent.com/u/13142418?v=4?s=50" width="50px;" alt="Eric Wong"/><br /><sub><b>Eric Wong</b></sub></a><br /><a href="https://github.com/neoclide/coc.nvim/commits?author=wsdjeg" title="Code">💻</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/oxalica"><img src="https://avatars.githubusercontent.com/u/14816024?v=4?s=50" width="50px;" alt="oxalica"/><br /><sub><b>oxalica</b></sub></a><br /><a href="https://github.com/neoclide/coc.nvim/commits?author=oxalica" title="Code">💻</a></td>
     </tr>
   </tbody>
 </table>