docs: add just-boris as a contributor (testing-library#527)

* docs: update README.md [skip ci]

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

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

Author: allcontributors[bot]

.all-contributorsrc

@@ -801,6 +801,15 @@
       "contributions": [
         "doc"
       ]
+    },
+    {
+      "login": "just-boris",
+      "name": "Boris Serdiuk",
+      "avatar_url": "https://avatars2.githubusercontent.com/u/812240?v=4",
+      "profile": "https://twitter.com/boriscoder",
+      "contributions": [
+        "doc"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -147,6 +147,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
     <td align="center"><a href="https://github.com/Alex-Sokolov"><img src="https://avatars3.githubusercontent.com/u/4497128?v=4" width="100px;" alt=""/><br /><sub><b>Alexander Sokolov</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=Alex-Sokolov" title="Documentation">📖</a></td>
     <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>
   </tr>
 </table>