docs: add InfiniteXyy as a contributor for code, and bug (testing-library#650)

* docs: update README.md

* docs: update .all-contributorsrc

---------

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

Author: allcontributors[bot]

.all-contributorsrc

@@ -843,6 +843,16 @@
       "contributions": [
         "bug"
       ]
+    },
+    {
+      "login": "InfiniteXyy",
+      "name": "InfiniteXyy",
+      "avatar_url": "https://avatars.githubusercontent.com/u/26314308?v=4",
+      "profile": "https://xyynext.com",
+      "contributions": [
+        "code",
+        "bug"
+      ]
     }
   ],
   "repoHost": "https://github.com",

README.md

@@ -1642,6 +1642,7 @@ Thanks goes to these people ([emoji key][emojis]):
     </tr>
     <tr>
       <td align="center" valign="top" width="14.28%"><a href="https://billyjanitsch.com"><img src="https://avatars.githubusercontent.com/u/1158733?v=4?s=100" width="100px;" alt="Billy Janitsch"/><br /><sub><b>Billy Janitsch</b></sub></a><br /><a href="https://github.com/testing-library/jest-dom/issues?q=author%3Abillyjanitsch" title="Bug reports">🐛</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://xyynext.com"><img src="https://avatars.githubusercontent.com/u/26314308?v=4?s=100" width="100px;" alt="InfiniteXyy"/><br /><sub><b>InfiniteXyy</b></sub></a><br /><a href="https://github.com/testing-library/jest-dom/commits?author=InfiniteXyy" title="Code">💻</a> <a href="https://github.com/testing-library/jest-dom/issues?q=author%3AInfiniteXyy" title="Bug reports">🐛</a></td>
     </tr>
   </tbody>
 </table>