docs: add afontcu as a contributor (#320)

* docs: update README.md

* docs: update .all-contributorsrc

Author: allcontributors[bot]

.all-contributorsrc

@@ -643,6 +643,16 @@
       "contributions": [
         "code"
       ]
+    },
+    {
+      "login": "afontcu",
+      "name": "Adrià Fontcuberta",
+      "avatar_url": "https://avatars0.githubusercontent.com/u/9197791?v=4",
+      "profile": "https://afontcu.dev",
+      "contributions": [
+        "code",
+        "test"
+      ]
     }
   ],
   "repoHost": "https://github.com"

README.md

@@ -27,7 +27,7 @@ practices.</p>
 [![downloads][downloads-badge]][npmtrends]
 [![MIT License][license-badge]][license]
 
-[![All Contributors](https://img.shields.io/badge/all_contributors-65-orange.svg?style=flat-square)](#contributors)
+[![All Contributors](https://img.shields.io/badge/all_contributors-66-orange.svg?style=flat-square)](#contributors)
 [![PRs Welcome][prs-badge]][prs]
 [![Code of Conduct][coc-badge]][coc]
 
@@ -214,6 +214,7 @@ Thanks goes to these people ([emoji key][emojis]):
   <tr>
     <td align="center"><a href="https://twitter.com/sebsilbermann"><img src="https://avatars3.githubusercontent.com/u/12292047?v=4" width="100px;" alt="Sebastian Silbermann"/><br /><sub><b>Sebastian Silbermann</b></sub></a><br /><a href="https://github.com/testing-library/dom-testing-library/commits?author=eps1lon" title="Code">💻</a> <a href="https://github.com/testing-library/dom-testing-library/commits?author=eps1lon" title="Tests">⚠️</a></td>
     <td align="center"><a href="https://dylanvann.com/"><img src="https://avatars0.githubusercontent.com/u/1537615?v=4" width="100px;" alt="Dylan Vann"/><br /><sub><b>Dylan Vann</b></sub></a><br /><a href="https://github.com/testing-library/dom-testing-library/commits?author=DylanVann" title="Code">💻</a></td>
+    <td align="center"><a href="https://afontcu.dev"><img src="https://avatars0.githubusercontent.com/u/9197791?v=4" width="100px;" alt="Adrià Fontcuberta"/><br /><sub><b>Adrià Fontcuberta</b></sub></a><br /><a href="https://github.com/testing-library/dom-testing-library/commits?author=afontcu" title="Code">💻</a> <a href="https://github.com/testing-library/dom-testing-library/commits?author=afontcu" title="Tests">⚠️</a></td>
   </tr>
 </table>