docs: add weyert as a contributor (#712)

* docs: update README.md

* docs: update .all-contributorsrc

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

Author: allcontributors[bot]

.all-contributorsrc

@@ -576,7 +576,8 @@
       "profile": "https://github.com/weyert",
       "contributions": [
         "ideas",
-        "review"
+        "review",
+        "design"
       ]
     },
     {

README.md

@@ -515,7 +515,7 @@ Thanks goes to these people ([emoji key][emojis]):
   <tr>
     <td align="center"><a href="http://www.aboutmonica.com"><img src="https://avatars0.githubusercontent.com/u/6998954?v=4" width="100px;" alt=""/><br /><sub><b>Monica Powell</b></sub></a><br /><a href="https://github.com/testing-library/react-testing-library/commits?author=M0nica" title="Documentation">📖</a></td>
     <td align="center"><a href="http://sivkoff.com"><img src="https://avatars1.githubusercontent.com/u/2699953?v=4" width="100px;" alt=""/><br /><sub><b>Vitaly Sivkov</b></sub></a><br /><a href="https://github.com/testing-library/react-testing-library/commits?author=sivkoff" title="Code">💻</a></td>
-    <td align="center"><a href="https://github.com/weyert"><img src="https://avatars3.githubusercontent.com/u/7049?v=4" width="100px;" alt=""/><br /><sub><b>Weyert de Boer</b></sub></a><br /><a href="#ideas-weyert" title="Ideas, Planning, & Feedback">🤔</a> <a href="https://github.com/testing-library/react-testing-library/pulls?q=is%3Apr+reviewed-by%3Aweyert" title="Reviewed Pull Requests">👀</a></td>
+    <td align="center"><a href="https://github.com/weyert"><img src="https://avatars3.githubusercontent.com/u/7049?v=4" width="100px;" alt=""/><br /><sub><b>Weyert de Boer</b></sub></a><br /><a href="#ideas-weyert" title="Ideas, Planning, & Feedback">🤔</a> <a href="https://github.com/testing-library/react-testing-library/pulls?q=is%3Apr+reviewed-by%3Aweyert" title="Reviewed Pull Requests">👀</a> <a href="#design-weyert" title="Design">🎨</a></td>
     <td align="center"><a href="https://github.com/EstebanMarin"><img src="https://avatars3.githubusercontent.com/u/13613037?v=4" width="100px;" alt=""/><br /><sub><b>EstebanMarin</b></sub></a><br /><a href="https://github.com/testing-library/react-testing-library/commits?author=EstebanMarin" title="Documentation">📖</a></td>
     <td align="center"><a href="https://github.com/vctormb"><img src="https://avatars2.githubusercontent.com/u/13953703?v=4" width="100px;" alt=""/><br /><sub><b>Victor Martins</b></sub></a><br /><a href="https://github.com/testing-library/react-testing-library/commits?author=vctormb" title="Documentation">📖</a></td>
     <td align="center"><a href="https://github.com/RoystonS"><img src="https://avatars0.githubusercontent.com/u/19773?v=4" width="100px;" alt=""/><br /><sub><b>Royston Shufflebotham</b></sub></a><br /><a href="https://github.com/testing-library/react-testing-library/issues?q=author%3ARoystonS" title="Bug reports">🐛</a> <a href="https://github.com/testing-library/react-testing-library/commits?author=RoystonS" title="Documentation">📖</a> <a href="#example-RoystonS" title="Examples">💡</a></td>