add nothub as a contributor for code (#1846)

* update README.md [skip ci]

* update .all-contributorsrc [skip ci]

---------

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

.all-contributorsrc

@@ -867,7 +867,8 @@
       "avatar_url": "https://avatars.githubusercontent.com/u/48992448?v=4",
       "profile": "http://hub.lol",
       "contributions": [
-        "doc"
+        "doc",
+        "code"
       ]
     }
   ],

README.md

@@ -164,7 +164,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
     </tr>
     <tr>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/testwill"><img src="https://avatars.githubusercontent.com/u/8717479?v=4?s=100" width="100px;" alt="guangwu"/><br /><sub><b>guangwu</b></sub></a><br /><a href="https://github.com/containrrr/watchtower/commits?author=testwill" title="Documentation">📖</a></td>
-      <td align="center" valign="top" width="14.28%"><a href="http://hub.lol"><img src="https://avatars.githubusercontent.com/u/48992448?v=4?s=100" width="100px;" alt="Florian Hübner"/><br /><sub><b>Florian Hübner</b></sub></a><br /><a href="https://github.com/containrrr/watchtower/commits?author=nothub" title="Documentation">📖</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="http://hub.lol"><img src="https://avatars.githubusercontent.com/u/48992448?v=4?s=100" width="100px;" alt="Florian Hübner"/><br /><sub><b>Florian Hübner</b></sub></a><br /><a href="https://github.com/containrrr/watchtower/commits?author=nothub" title="Documentation">📖</a> <a href="https://github.com/containrrr/watchtower/commits?author=nothub" title="Code">💻</a></td>
     </tr>
   </tbody>
 </table>