docs: add brianlu2610 as a contributor for code (#1451)

* 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

@@ -2737,6 +2737,15 @@
       "contributions": [
         "doc"
       ]
+    },
+    {
+      "login": "brianlu2610",
+      "name": "brianlu2610",
+      "avatar_url": "https://avatars.githubusercontent.com/u/68666483?v=4",
+      "profile": "https://github.com/brianlu2610",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -524,6 +524,7 @@ Thanks goes to these wonderful people
     </tr>
     <tr>
       <td align="center" valign="top" width="14.28%"><a href="https://noma.to"><img src="https://avatars.githubusercontent.com/u/6018732?v=4?s=100" width="100px;" alt="Ian Létourneau"/><br /><sub><b>Ian Létourneau</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=ianlet" title="Documentation">📖</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://github.com/brianlu2610"><img src="https://avatars.githubusercontent.com/u/68666483?v=4?s=100" width="100px;" alt="brianlu2610"/><br /><sub><b>brianlu2610</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=brianlu2610" title="Code">💻</a></td>
     </tr>
   </tbody>
 </table>