docs: add ljosberinn as a contributor (#584)

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

Author: allcontributors[bot]

.all-contributorsrc

@@ -927,6 +927,15 @@
       "contributions": [
         "doc"
       ]
+    },
+    {
+      "login": "ljosberinn",
+      "name": "Gerrit Alex",
+      "avatar_url": "https://avatars1.githubusercontent.com/u/29307652?v=4",
+      "profile": "http://gerritalex.de",
+      "contributions": [
+        "doc"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -165,6 +165,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
     <td align="center"><a href="https://malykhinvi.dev"><img src="https://avatars2.githubusercontent.com/u/5537715?v=4" width="100px;" alt=""/><br /><sub><b>Vasily Malykhin</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=malykhinvi" title="Documentation">📖</a></td>
     <td align="center"><a href="https://github.com/brrianalexis"><img src="https://avatars2.githubusercontent.com/u/51463930?v=4" width="100px;" alt=""/><br /><sub><b>Brian Alexis</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=brrianalexis" title="Documentation">📖</a></td>
     <td align="center"><a href="http://KnowKalpesh.in"><img src="https://avatars2.githubusercontent.com/u/13119410?v=4" width="100px;" alt=""/><br /><sub><b>Kalpesh Singh</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=kalpeshsingh" title="Documentation">📖</a></td>
+    <td align="center"><a href="http://gerritalex.de"><img src="https://avatars1.githubusercontent.com/u/29307652?v=4" width="100px;" alt=""/><br /><sub><b>Gerrit Alex</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=ljosberinn" title="Documentation">📖</a></td>
   </tr>
 </table>