docs: add Dennis273 as a contributor for doc (#995)

* docs: update README.md [skip ci]

* docs: update .all-contributorsrc [skip ci]

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

Author: allcontributors[bot]

.all-contributorsrc

@@ -1726,6 +1726,15 @@
       "contributions": [
         "doc"
       ]
+    },
+    {
+      "login": "Dennis273",
+      "name": "Dennis273",
+      "avatar_url": "https://avatars.githubusercontent.com/u/19815164?v=4",
+      "profile": "https://github.com/Dennis273",
+      "contributions": [
+        "doc"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -383,6 +383,7 @@ Thanks goes to these wonderful people
   </tr>
   <tr>
     <td align="center"><a href="https://github.com/jakeboone02"><img src="https://avatars.githubusercontent.com/u/366438?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Jake Boone</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=jakeboone02" title="Documentation">📖</a></td>
+    <td align="center"><a href="https://github.com/Dennis273"><img src="https://avatars.githubusercontent.com/u/19815164?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Dennis273</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=Dennis273" title="Documentation">📖</a></td>
   </tr>
 </table>