docs: add nilshartmann as a contributor (#260)

* docs: update README.md [skip ci]

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

* chore: format README.md

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

Author: allcontributors[bot]

.all-contributorsrc

@@ -85,6 +85,15 @@
         "code",
         "test"
       ]
+    },
+    {
+      "login": "nilshartmann",
+      "name": "Nils Hartmann",
+      "avatar_url": "https://avatars0.githubusercontent.com/u/435073?v=4",
+      "profile": "https://nilshartmann.net",
+      "contributions": [
+        "bug"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -94,6 +94,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
   </tr>
   <tr>
     <td align="center"><a href="https://github.com/timmak"><img src="https://avatars2.githubusercontent.com/u/24553?v=4" width="100px;" alt=""/><br /><sub><b>Tim Pinington</b></sub></a><br /><a href="https://github.com/testing-library/testcafe-testing-library/commits?author=timmak" title="Code">💻</a> <a href="https://github.com/testing-library/testcafe-testing-library/commits?author=timmak" title="Tests">⚠️</a></td>
+    <td align="center"><a href="https://nilshartmann.net"><img src="https://avatars0.githubusercontent.com/u/435073?v=4" width="100px;" alt=""/><br /><sub><b>Nils Hartmann</b></sub></a><br /><a href="https://github.com/testing-library/testcafe-testing-library/issues?q=author%3Anilshartmann" title="Bug reports">🐛</a></td>
   </tr>
 </table>