docs: add nankeen as a contributor for code (#1264)

* docs: update CONTRIBUTORS.md

* docs: update .all-contributorsrc

---------

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

.all-contributorsrc

@@ -1013,6 +1013,15 @@
       "contributions": [
         "financial"
       ]
+    },
+    {
+      "login": "nankeen",
+      "name": "Kai",
+      "avatar_url": "https://avatars.githubusercontent.com/u/6895854?v=4",
+      "profile": "http://nankeen.me",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "contributorsPerLine": 7,

CONTRIBUTORS.md

@@ -144,6 +144,7 @@
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/tyxieblub"><img src="https://avatars.githubusercontent.com/u/5111464?v=4?s=100" width="100px;" alt="joris"/><br /><sub><b>joris</b></sub></a><br /><a href="https://github.com/bpg/terraform-provider-proxmox/commits?author=tyxieblub" title="Code">💻</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://www.nordtheme.com"><img src="https://avatars.githubusercontent.com/u/13448100?v=4?s=100" width="100px;" alt="Sven Greb"/><br /><sub><b>Sven Greb</b></sub></a><br /><a href="https://github.com/bpg/terraform-provider-proxmox/commits?author=svengreb" title="Code">💻</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/niektoniekde"><img src="https://avatars.githubusercontent.com/u/271951?v=4?s=100" width="100px;" alt="Jaroslav Petras"/><br /><sub><b>Jaroslav Petras</b></sub></a><br /><a href="#financial-niektoniekde" title="Financial">💵</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="http://nankeen.me"><img src="https://avatars.githubusercontent.com/u/6895854?v=4?s=100" width="100px;" alt="Kai"/><br /><sub><b>Kai</b></sub></a><br /><a href="https://github.com/bpg/terraform-provider-proxmox/commits?author=nankeen" title="Code">💻</a></td>
     </tr>
   </tbody>
   <tfoot>