docs: add icecream17 as a contributor for doc (#381)

* docs: update README.md
* docs: update .all-contributorsrc

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

Author: allcontributors[bot]

.all-contributorsrc

@@ -623,6 +623,15 @@
         "code",
         "test"
       ]
+    },
+    {
+      "login": "icecream17",
+      "name": "steven nguyen",
+      "avatar_url": "https://avatars.githubusercontent.com/u/58114641?v=4",
+      "profile": "http://lichess.org/@/StevenEmily",
+      "contributions": [
+        "doc"
+      ]
     }
   ],
   "repoHost": "https://github.com",

README.md

@@ -1350,6 +1350,7 @@ Thanks goes to these people ([emoji key][emojis]):
     <td align="center"><a href="https://github.com/marcelbarner"><img src="https://avatars.githubusercontent.com/u/12788744?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Marcel Barner</b></sub></a><br /><a href="https://github.com/testing-library/jest-dom/commits?author=marcelbarner" title="Code">💻</a> <a href="https://github.com/testing-library/jest-dom/commits?author=marcelbarner" title="Tests">⚠️</a></td>
     <td align="center"><a href="https://github.com/SevenOutman"><img src="https://avatars.githubusercontent.com/u/8225666?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Doma</b></sub></a><br /><a href="https://github.com/testing-library/jest-dom/commits?author=SevenOutman" title="Code">💻</a> <a href="https://github.com/testing-library/jest-dom/commits?author=SevenOutman" title="Tests">⚠️</a></td>
     <td align="center"><a href="http://everlong.org/"><img src="https://avatars.githubusercontent.com/u/454175?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Julien Wajsberg</b></sub></a><br /><a href="https://github.com/testing-library/jest-dom/commits?author=julienw" title="Code">💻</a> <a href="https://github.com/testing-library/jest-dom/commits?author=julienw" title="Tests">⚠️</a></td>
+    <td align="center"><a href="http://lichess.org/@/StevenEmily"><img src="https://avatars.githubusercontent.com/u/58114641?v=4?s=100" width="100px;" alt=""/><br /><sub><b>steven nguyen</b></sub></a><br /><a href="https://github.com/testing-library/jest-dom/commits?author=icecream17" title="Documentation">📖</a></td>
   </tr>
 </table>