docs: add marcosvega91 as a contributor (#822)

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

Author: allcontributors[bot]

.all-contributorsrc

@@ -1213,6 +1213,15 @@
         "review",
         "ideas"
       ]
+    },
+    {
+      "login": "marcosvega91",
+      "name": "Marco Moretti",
+      "avatar_url": "https://avatars2.githubusercontent.com/u/5365582?v=4",
+      "profile": "https://github.com/marcosvega91",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -601,6 +601,9 @@ Thanks goes to these people ([emoji key][emojis]):
     <td align="center"><a href="https://github.com/lidoravitan"><img src="https://avatars0.githubusercontent.com/u/35113398?v=4" width="100px;" alt=""/><br /><sub><b>Lidor Avitan</b></sub></a><br /><a href="https://github.com/testing-library/react-testing-library/commits?author=lidoravitan" title="Documentation">📖</a></td>
     <td align="center"><a href="https://github.com/ljharb"><img src="https://avatars1.githubusercontent.com/u/45469?v=4" width="100px;" alt=""/><br /><sub><b>Jordan Harband</b></sub></a><br /><a href="https://github.com/testing-library/react-testing-library/pulls?q=is%3Apr+reviewed-by%3Aljharb" title="Reviewed Pull Requests">👀</a> <a href="#ideas-ljharb" title="Ideas, Planning, & Feedback">🤔</a></td>
   </tr>
+  <tr>
+    <td align="center"><a href="https://github.com/marcosvega91"><img src="https://avatars2.githubusercontent.com/u/5365582?v=4" width="100px;" alt=""/><br /><sub><b>Marco Moretti</b></sub></a><br /><a href="https://github.com/testing-library/react-testing-library/commits?author=marcosvega91" title="Code">💻</a></td>
+  </tr>
 </table>
 
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