docs: add 13RTK as a contributor for doc (#1518)

Author: allcontributors[bot]

.all-contributorsrc

@@ -2800,6 +2800,15 @@
       "contributions": [
         "doc"
       ]
+    },
+    {
+      "login": "13RTK",
+      "name": "Uaena_Alex_John",
+      "avatar_url": "https://avatars.githubusercontent.com/u/63441399?v=4",
+      "profile": "https://hdalex.top/",
+      "contributions": [
+        "doc"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -534,6 +534,7 @@ Thanks goes to these wonderful people
     </tr>
     <tr>
       <td align="center" valign="top" width="14.28%"><a href="https://github.com/fetsorn"><img src="https://avatars.githubusercontent.com/u/12858105?v=4?s=100" width="100px;" alt="fetsorn"/><br /><sub><b>fetsorn</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=fetsorn" title="Documentation">📖</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://hdalex.top/"><img src="https://avatars.githubusercontent.com/u/63441399?v=4?s=100" width="100px;" alt="Uaena_Alex_John"/><br /><sub><b>Uaena_Alex_John</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=13RTK" title="Documentation">📖</a></td>
     </tr>
   </tbody>
 </table>