docs: add andrewhillcode as a contributor (#340)

* docs: update README.md

* docs: update .all-contributorsrc


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

Author: allcontributors[bot]

.all-contributorsrc

@@ -673,6 +673,15 @@
         "code",
         "test"
       ]
+    },
+    {
+      "login": "andrewhillcode",
+      "name": "Andrew Hill",
+      "avatar_url": "https://avatars1.githubusercontent.com/u/12396191?v=4",
+      "profile": "http://andrewhillcode.com",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "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-68-orange.svg?style=flat-square)](#contributors)
+[![All Contributors](https://img.shields.io/badge/all_contributors-69-orange.svg?style=flat-square)](#contributors)
 [![PRs Welcome][prs-badge]][prs]
 [![Code of Conduct][coc-badge]][coc]
 
@@ -217,6 +217,7 @@ Thanks goes to these people ([emoji key][emojis]):
     <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> <a href="https://github.com/testing-library/dom-testing-library/commits?author=afontcu" title="Documentation">📖</a></td>
     <td align="center"><a href="http://thomlom.dev"><img src="https://avatars3.githubusercontent.com/u/16003285?v=4" width="100px;" alt="Thomas Lombart"/><br /><sub><b>Thomas Lombart</b></sub></a><br /><a href="https://github.com/testing-library/dom-testing-library/commits?author=thomlom" title="Code">💻</a></td>
     <td align="center"><a href="https://twitter.com/SavePointSam"><img src="https://avatars0.githubusercontent.com/u/8203211?v=4" width="100px;" alt="Sam Horton"/><br /><sub><b>Sam Horton</b></sub></a><br /><a href="https://github.com/testing-library/dom-testing-library/commits?author=SavePointSam" title="Code">💻</a> <a href="https://github.com/testing-library/dom-testing-library/commits?author=SavePointSam" title="Tests">⚠️</a></td>
+    <td align="center"><a href="http://andrewhillcode.com"><img src="https://avatars1.githubusercontent.com/u/12396191?v=4" width="100px;" alt="Andrew Hill"/><br /><sub><b>Andrew Hill</b></sub></a><br /><a href="https://github.com/testing-library/dom-testing-library/commits?author=andrewhillcode" title="Code">💻</a></td>
   </tr>
 </table>