docs: add silvenon as a contributor for doc (#1085)

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

Author: allcontributors[bot]

.all-contributorsrc

@@ -1961,6 +1961,15 @@
       "contributions": [
         "doc"
       ]
+    },
+    {
+      "login": "silvenon",
+      "name": "Matija Marohnić",
+      "avatar_url": "https://avatars.githubusercontent.com/u/471278?v=4",
+      "profile": "https://silvenon.com",
+      "contributions": [
+        "doc"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -411,6 +411,7 @@ Thanks goes to these wonderful people
     <td align="center"><a href="https://github.com/mrazauskas"><img src="https://avatars.githubusercontent.com/u/72159681?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Tom Mrazauskas</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=mrazauskas" title="Documentation">📖</a></td>
     <td align="center"><a href="http://supermaryy.com"><img src="https://avatars.githubusercontent.com/u/12708942?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Supermaryy</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=LuckyMona" title="Documentation">📖</a></td>
     <td align="center"><a href="http://BenENewton.com"><img src="https://avatars.githubusercontent.com/u/458991?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Ben Newton</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=bennewton999" title="Documentation">📖</a></td>
+    <td align="center"><a href="https://silvenon.com"><img src="https://avatars.githubusercontent.com/u/471278?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Matija Marohnić</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=silvenon" title="Documentation">📖</a></td>
   </tr>
 </table>