docs: add balavishnuvj as a contributor (testing-library#530)

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

Author: allcontributors[bot]

.all-contributorsrc

@@ -810,6 +810,15 @@
  "contributions": [
  "doc"
  ]
+ },
+ {
+ "login": "balavishnuvj",
+ "name": "balavishnuvj",
+ "avatar_url": "https://avatars3.githubusercontent.com/u/13718688?v=4",
+ "profile": "https://github.com/balavishnuvj",
+ "contributions": [
+ "doc"
+ ]
  }
  ],
  "contributorsPerLine": 7,

README.md

@@ -148,6 +148,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
  <td align="center"><a href="https://github.com/sastan"><img src="https://avatars1.githubusercontent.com/u/514405?v=4" width="100px;" alt=""/><br /><sub><b>Sascha Tandel</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=sastan" title="Documentation">📖</a></td>
  <td align="center"><a href="https://gyuwon.github.io/"><img src="https://avatars3.githubusercontent.com/u/973743?v=4" width="100px;" alt=""/><br /><sub><b>Gyuwon Yi</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=gyuwon" title="Documentation">📖</a></td>
  <td align="center"><a href="https://twitter.com/boriscoder"><img src="https://avatars2.githubusercontent.com/u/812240?v=4" width="100px;" alt=""/><br /><sub><b>Boris Serdiuk</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=just-boris" title="Documentation">📖</a></td>
+ <td align="center"><a href="https://github.com/balavishnuvj"><img src="https://avatars3.githubusercontent.com/u/13718688?v=4" width="100px;" alt=""/><br /><sub><b>balavishnuvj</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=balavishnuvj" title="Documentation">📖</a></td>
  </tr>
 </table>