docs: add tsickert as a contributor for doc (#1004)

* docs: update README.md [skip ci]

* docs: update .all-contributorsrc [skip ci]

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

.all-contributorsrc

@@ -159,6 +159,15 @@
  "contributions": [
  "code"
  ]
+ },
+ {
+ "login": "tsickert",
+ "name": "Thomas Sickert",
+ "avatar_url": "https://avatars.githubusercontent.com/u/11492877?v=4",
+ "profile": "http://thomas.sickert.dev",
+ "contributions": [
+ "doc"
+ ]
  }
  ],
  "contributorsPerLine": 7,

README.md

@@ -248,6 +248,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
  <td align="center"><a href="https:/amayvs"><img src="https://avatars.githubusercontent.com/u/842194?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Amay Shah</b></sub></a><br /><a href="https:/flipt-io/flipt/commits?author=amayvs" title="Code">💻</a></td>
  <td align="center"><a href="https:/kevin-ip"><img src="https://avatars.githubusercontent.com/u/28875408?v=4?s=100" width="100px;" alt=""/><br /><sub><b>kevin-ip</b></sub></a><br /><a href="https:/flipt-io/flipt/commits?author=kevin-ip" title="Code">💻</a></td>
  <td align="center"><a href="https:/albertchae"><img src="https://avatars.githubusercontent.com/u/217050?v=4?s=100" width="100px;" alt=""/><br /><sub><b>albertchae</b></sub></a><br /><a href="https:/flipt-io/flipt/commits?author=albertchae" title="Code">💻</a></td>
+ <td align="center"><a href="http://thomas.sickert.dev"><img src="https://avatars.githubusercontent.com/u/11492877?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Thomas Sickert</b></sub></a><br /><a href="https:/flipt-io/flipt/commits?author=tsickert" title="Documentation">📖</a></td>
  </tr>
 </table>