Add @chinchang as a contributor

.all-contributorsrc

@@ -91,6 +91,16 @@
         "content",
         "doc"
       ]
+    },
+    {
+      "login": "chinchang",
+      "name": "Kushagra Gour",
+      "avatar_url": "https://avatars.githubusercontent.com/u/379918?v=4",
+      "profile": "https://cssbattle.dev/",
+      "contributions": [
+        "content",
+        "doc"
+      ]
     }
   ],
   "contributorsPerLine": 7

README.md

@@ -900,6 +900,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
   </tr>
   <tr>
     <td align="center"><a href="https://binyam.in/"><img src="https://avatars.githubusercontent.com/u/39805353?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Binyamin Aron Green</b></sub></a><br /><a href="#content-binyamin" title="Content">🖋</a> <a href="https://github.com/codingknite/frontend-development/commits?author=binyamin" title="Documentation">📖</a></td>
+    <td align="center"><a href="https://cssbattle.dev/"><img src="https://avatars.githubusercontent.com/u/379918?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Kushagra Gour</b></sub></a><br /><a href="#content-chinchang" title="Content">🖋</a> <a href="https://github.com/codingknite/frontend-development/commits?author=chinchang" title="Documentation">📖</a></td>
   </tr>
 </table>