docs: add thanhsonng as a contributor for doc (#1113)

* docs: update README.md [skip ci]

* docs: update .all-contributorsrc [skip ci]

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

Author: allcontributors[bot]

.all-contributorsrc

@@ -2033,6 +2033,15 @@
       "contributions": [
         "design"
       ]
+    },
+    {
+      "login": "thanhsonng",
+      "name": "Son Nguyen",
+      "avatar_url": "https://avatars.githubusercontent.com/u/28614996?v=4",
+      "profile": "https://sonng.dev/",
+      "contributions": [
+        "doc"
+      ]
     }
   ],
   "contributorsPerLine": 7,

README.md

@@ -422,6 +422,9 @@ Thanks goes to these wonderful people
     <td align="center"><a href="https://github.com/shaiRose"><img src="https://avatars.githubusercontent.com/u/4546940?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Shai Rose</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=shaiRose" title="Documentation">📖</a></td>
     <td align="center"><a href="https://github.com/AldinRekic"><img src="https://avatars.githubusercontent.com/u/65592409?v=4?s=100" width="100px;" alt=""/><br /><sub><b>AldinRekic</b></sub></a><br /><a href="#design-AldinRekic" title="Design">🎨</a></td>
   </tr>
+  <tr>
+    <td align="center"><a href="https://sonng.dev/"><img src="https://avatars.githubusercontent.com/u/28614996?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Son Nguyen</b></sub></a><br /><a href="https://github.com/testing-library/testing-library-docs/commits?author=thanhsonng" title="Documentation">📖</a></td>
+  </tr>
 </table>
 
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