docs: add mateusduraes as a contributor for code (#311)

Author: allcontributors[bot]

.all-contributorsrc

@@ -303,6 +303,15 @@
       "contributions": [
         "code"
       ]
+    },
+    {
+      "login": "mateusduraes",
+      "name": "Mateus Duraes",
+      "avatar_url": "https://avatars.githubusercontent.com/u/19319404?v=4",
+      "profile": "https://github.com/mateusduraes",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -223,6 +223,7 @@ Thanks goes to these people ([emoji key][emojis]):
     <td align="center"><a href="https://github.com/meirka"><img src="https://avatars.githubusercontent.com/u/750901?v=4?s=100" width="100px;" alt=""/><br /><sub><b>MeIr</b></sub></a><br /><a href="https://github.com/testing-library/angular-testing-library/issues?q=author%3Ameirka" title="Bug reports">🐛</a> <a href="https://github.com/testing-library/angular-testing-library/commits?author=meirka" title="Tests">⚠️</a></td>
     <td align="center"><a href="https://github.com/jadengis"><img src="https://avatars.githubusercontent.com/u/13421336?v=4?s=100" width="100px;" alt=""/><br /><sub><b>John Dengis</b></sub></a><br /><a href="https://github.com/testing-library/angular-testing-library/commits?author=jadengis" title="Code">💻</a> <a href="https://github.com/testing-library/angular-testing-library/commits?author=jadengis" title="Tests">⚠️</a></td>
     <td align="center"><a href="https://github.com/dzonatan"><img src="https://avatars.githubusercontent.com/u/5166666?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Rokas Brazdžionis</b></sub></a><br /><a href="https://github.com/testing-library/angular-testing-library/commits?author=dzonatan" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/mateusduraes"><img src="https://avatars.githubusercontent.com/u/19319404?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Mateus Duraes</b></sub></a><br /><a href="https://github.com/testing-library/angular-testing-library/commits?author=mateusduraes" title="Code">💻</a></td>
   </tr>
 </table>