docs: update .all-contributorsrc [skip ci]

.all-contributorsrc

@@ -122,7 +122,8 @@
       "avatar_url": "https://avatars.githubusercontent.com/u/73212230?v=4",
       "profile": "https://github.com/abhishek-s-a",
       "contributions": [
-        "code"
+        "code",
+        "doc"
       ]
     },
     {