docs: add rkennel as a contributor (#473)

Author: allcontributors[bot]

.all-contributorsrc

@@ -729,6 +729,15 @@
  "contributions": [
  "doc"
  ]
+ },
+ {
+ "login": "rkennel",
+ "name": "Ryan Kennel",
+ "avatar_url": "https://avatars2.githubusercontent.com/u/28492538?v=4",
+ "profile": "https://github.com/rkennel",
+ "contributions": [
+ "doc"
+ ]
  }
  ],
  "contributorsPerLine": 7,

README.md

@@ -137,6 +137,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
  <td align="center"><a href="https://jamie.tokyo"><img src="https://avatars0.githubusercontent.com/u/5964236?v=4" width="100px;" alt=""/><br /><sub><b>Jamie</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=jamsinclair" title="Documentation">📖</a></td>
  <td align="center"><a href="http://www.bitnative.com"><img src="https://avatars2.githubusercontent.com/u/1688997?v=4" width="100px;" alt=""/><br /><sub><b>Cory House</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=coryhouse" title="Documentation">📖</a></td>
  <td align="center"><a href="http://fb.me/yz"><img src="https://avatars3.githubusercontent.com/u/14841421?v=4" width="100px;" alt=""/><br /><sub><b>Jack Zhao</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=bugzpodder" title="Documentation">📖</a></td>
+ <td align="center"><a href="https://github.com/rkennel"><img src="https://avatars2.githubusercontent.com/u/28492538?v=4" width="100px;" alt=""/><br /><sub><b>Ryan Kennel</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=rkennel" title="Documentation">📖</a></td>
  </tr>
 </table>