docs: add m4theushw as a contributor (#413)

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

Author: allcontributors[bot]

.all-contributorsrc

@@ -310,6 +310,15 @@
       "contributions": [
         "code"
       ]
+    },
+    {
+      "login": "m4theushw",
+      "name": "Matheus Wichman",
+      "avatar_url": "https://avatars3.githubusercontent.com/u/42154031?v=4",
+      "profile": "https://matheushw.com/",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -636,6 +636,7 @@ Thanks goes to these wonderful people ([emoji key](https://github.com/kentcdodds
     <td align="center"><a href="https://github.com/isuscbrmid"><img src="https://avatars3.githubusercontent.com/u/20484267?v=4" width="100px;" alt=""/><br /><sub><b>Jesus Cabrera Gonzalez</b></sub></a><br /><a href="https://github.com/dowjones/react-dropdown-tree-select/commits?author=isuscbrmid" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/MJRuskin"><img src="https://avatars2.githubusercontent.com/u/27359753?v=4" width="100px;" alt=""/><br /><sub><b>MJRuskin</b></sub></a><br /><a href="https://github.com/dowjones/react-dropdown-tree-select/commits?author=MJRuskin" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/akarshjairaj"><img src="https://avatars1.githubusercontent.com/u/64946671?v=4" width="100px;" alt=""/><br /><sub><b>akarshjairaj</b></sub></a><br /><a href="https://github.com/dowjones/react-dropdown-tree-select/commits?author=akarshjairaj" title="Code">💻</a></td>
+    <td align="center"><a href="https://matheushw.com/"><img src="https://avatars3.githubusercontent.com/u/42154031?v=4" width="100px;" alt=""/><br /><sub><b>Matheus Wichman</b></sub></a><br /><a href="https://github.com/dowjones/react-dropdown-tree-select/commits?author=m4theushw" title="Code">💻</a></td>
   </tr>
 </table>