docs: add MichaelSp as a contributor (#613)

* 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

@@ -629,6 +629,15 @@
       "contributions": [
         "doc"
       ]
+    },
+    {
+      "login": "MichaelSp",
+      "name": "Michael",
+      "avatar_url": "https://avatars0.githubusercontent.com/u/448282?v=4",
+      "profile": "https://github.com/MichaelSp",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -156,6 +156,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
     <td align="center"><a href="https://github.com/mattdoran"><img src="https://avatars0.githubusercontent.com/u/577779?v=4" width="100px;" alt=""/><br /><sub><b>Matt Doran</b></sub></a><br /><a href="https://github.com/containrrr/watchtower/commits?author=mattdoran" title="Documentation">📖</a></td>
     <td align="center"><a href="https://github.com/MihailITPlace"><img src="https://avatars2.githubusercontent.com/u/28401551?v=4" width="100px;" alt=""/><br /><sub><b>MihailITPlace</b></sub></a><br /><a href="https://github.com/containrrr/watchtower/commits?author=MihailITPlace" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/bugficks"><img src="https://avatars1.githubusercontent.com/u/2992895?v=4" width="100px;" alt=""/><br /><sub><b>bugficks</b></sub></a><br /><a href="https://github.com/containrrr/watchtower/commits?author=bugficks" title="Documentation">📖</a></td>
+    <td align="center"><a href="https://github.com/MichaelSp"><img src="https://avatars0.githubusercontent.com/u/448282?v=4" width="100px;" alt=""/><br /><sub><b>Michael</b></sub></a><br /><a href="https://github.com/containrrr/watchtower/commits?author=MichaelSp" title="Code">💻</a></td>
   </tr>
 </table>