docs: add DennisGaida as a contributor for doc (#3009)

Co-authored-by: allcontributors[bot] <46447321+allcontributors[bot]@users.noreply.github.com>
Co-authored-by: James Elliott <james-d-elliott@users.noreply.github.com>

.all-contributorsrc

@@ -613,6 +613,15 @@
         "doc",
         "test"
       ]
+    },
+    {
+      "login": "DennisGaida",
+      "name": "Dennis Gaida",
+      "avatar_url": "https://avatars.githubusercontent.com/u/2392217?v=4",
+      "profile": "http://www.dennisgaida.de",
+      "contributions": [
+        "doc"
+      ]
     }
   ],
   "contributorsPerLine": 7

README.md

@@ -279,6 +279,9 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
     <td align="center"><a href="https://github.com/tarioch"><img src="https://avatars.githubusercontent.com/u/2998148?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Patrick Ruckstuhl</b></sub></a><br /><a href="https://github.com/authelia/authelia/commits?author=tarioch" title="Documentation">📖</a></td>
     <td align="center"><a href="https://github.com/FineWolf"><img src="https://avatars.githubusercontent.com/u/203591?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Andrew Moore</b></sub></a><br /><a href="https://github.com/authelia/authelia/commits?author=FineWolf" title="Code">💻</a> <a href="https://github.com/authelia/authelia/commits?author=FineWolf" title="Documentation">📖</a> <a href="https://github.com/authelia/authelia/commits?author=FineWolf" title="Tests">⚠️</a></td>
   </tr>
+  <tr>
+    <td align="center"><a href="http://www.dennisgaida.de"><img src="https://avatars.githubusercontent.com/u/2392217?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Dennis Gaida</b></sub></a><br /><a href="https://github.com/authelia/authelia/commits?author=DennisGaida" title="Documentation">📖</a></td>
+  </tr>
 </table>
 
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