docs: add robin-drexler as a contributor for doc (#1092)

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

Author: allcontributors[bot]

.all-contributorsrc

@@ -1979,6 +1979,15 @@
       "contributions": [
         "doc"
       ]
+    },
+    {
+      "login": "robin-drexler",
+      "name": "Robin Drexler",
+      "avatar_url": "https://avatars.githubusercontent.com/u/474248?v=4",
+      "profile": "https://www.robin-drexler.com/",
+      "contributions": [
+        "doc"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -415,6 +415,7 @@ Thanks goes to these wonderful people
   </tr>
   <tr>
     <td align="center"><a href="https://thaddeusjiang.com/"><img src="https://avatars.githubusercontent.com/u/17308201?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Thaddeus Jiang</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=ThaddeusJiang" title="Documentation">📖</a></td>
+    <td align="center"><a href="https://www.robin-drexler.com/"><img src="https://avatars.githubusercontent.com/u/474248?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Robin Drexler</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=robin-drexler" title="Documentation">📖</a></td>
   </tr>
 </table>