docs: add miguelerja as a contributor (#155)

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

Author: allcontributors[bot]

.all-contributorsrc

@@ -234,6 +234,15 @@
         "code",
         "test"
       ]
+    },
+    {
+      "login": "miguelerja",
+      "name": "Miguel Erja González",
+      "avatar_url": "https://avatars2.githubusercontent.com/u/42043025?v=4",
+      "profile": "https://xxxl.digital/",
+      "contributions": [
+        "bug"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -23,7 +23,7 @@
 [![Tweet][tweet-badge]][tweet-url]
 
 <!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
-[![All Contributors](https://img.shields.io/badge/all_contributors-21-orange.svg?style=flat-square)](#contributors-)
+[![All Contributors](https://img.shields.io/badge/all_contributors-22-orange.svg?style=flat-square)](#contributors-)
 <!-- ALL-CONTRIBUTORS-BADGE:END -->
 
 ## Installation
@@ -203,6 +203,9 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
     <td align="center"><a href="https://github.com/jmcriffey"><img src="https://avatars0.githubusercontent.com/u/2831294?v=4" width="100px;" alt=""/><br /><sub><b>Jeff Rifwald</b></sub></a><br /><a href="https://github.com/testing-library/eslint-plugin-testing-library/commits?author=jmcriffey" title="Documentation">📖</a></td>
     <td align="center"><a href="https://blog.lourenci.com/"><img src="https://avatars3.githubusercontent.com/u/2339362?v=4" width="100px;" alt=""/><br /><sub><b>Leandro Lourenci</b></sub></a><br /><a href="https://github.com/testing-library/eslint-plugin-testing-library/issues?q=author%3Alourenci" title="Bug reports">🐛</a> <a href="https://github.com/testing-library/eslint-plugin-testing-library/commits?author=lourenci" title="Code">💻</a> <a href="https://github.com/testing-library/eslint-plugin-testing-library/commits?author=lourenci" title="Tests">⚠️</a></td>
   </tr>
+  <tr>
+    <td align="center"><a href="https://xxxl.digital/"><img src="https://avatars2.githubusercontent.com/u/42043025?v=4" width="100px;" alt=""/><br /><sub><b>Miguel Erja González</b></sub></a><br /><a href="https://github.com/testing-library/eslint-plugin-testing-library/issues?q=author%3Amiguelerja" title="Bug reports">🐛</a></td>
+  </tr>
 </table>
 
 <!-- markdownlint-enable -->