docs: add kalmi as a contributor for code (#1155)

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

Author: allcontributors[bot]

.all-contributorsrc

@@ -1553,6 +1553,15 @@
       "contributions": [
         "code"
       ]
+    },
+    {
+      "login": "kalmi",
+      "name": "Tarnay Kálmán",
+      "avatar_url": "https://avatars.githubusercontent.com/u/54426?v=4",
+      "profile": "https://github.com/kalmi",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "repoHost": "https://github.com"

README.md

@@ -335,6 +335,7 @@ Thanks goes to these people ([emoji key][emojis]):
     <td align="center"><a href="https://www.robin-drexler.com/"><img src="https://avatars.githubusercontent.com/u/474248?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Robin Drexler</b></sub></a><br /><a href="https://github.com/testing-library/dom-testing-library/commits?author=robin-drexler" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/dolevoper"><img src="https://avatars.githubusercontent.com/u/53278705?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Omer Dolev</b></sub></a><br /><a href="https://github.com/testing-library/dom-testing-library/commits?author=dolevoper" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/Lirlev48"><img src="https://avatars.githubusercontent.com/u/58209233?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Lirlev48</b></sub></a><br /><a href="https://github.com/testing-library/dom-testing-library/commits?author=Lirlev48" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/kalmi"><img src="https://avatars.githubusercontent.com/u/54426?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Tarnay Kálmán</b></sub></a><br /><a href="https://github.com/testing-library/dom-testing-library/commits?author=kalmi" title="Code">💻</a></td>
   </tr>
 </table>