docs: add Ishaan28malik as a contributor (#236)

.all-contributorsrc

@@ -431,6 +431,15 @@
         "code",
         "test"
       ]
+    },
+    {
+      "login": "Ishaan28malik",
+      "name": "Championrunner",
+      "avatar_url": "https://avatars3.githubusercontent.com/u/27343592?v=4",
+      "profile": "https://ghuser.io/Ishaan28malik",
+      "contributions": [
+        "doc"
+      ]
     }
   ],
   "repoHost": "https://github.com",

README.md

@@ -1020,6 +1020,7 @@ Thanks goes to these people ([emoji key][emojis]):
   </tr>
   <tr>
     <td align="center"><a href="https://github.com/mfelmy"><img src="https://avatars2.githubusercontent.com/u/29504917?v=4" width="100px;" alt=""/><br /><sub><b>Malte Felmy</b></sub></a><br /><a href="https://github.com/testing-library/jest-dom/commits?author=mfelmy" title="Code">💻</a> <a href="https://github.com/testing-library/jest-dom/commits?author=mfelmy" title="Tests">⚠️</a></td>
+    <td align="center"><a href="https://ghuser.io/Ishaan28malik"><img src="https://avatars3.githubusercontent.com/u/27343592?v=4" width="100px;" alt=""/><br /><sub><b>Championrunner</b></sub></a><br /><a href="https://github.com/testing-library/jest-dom/commits?author=Ishaan28malik" title="Documentation">📖</a></td>
   </tr>
 </table>