docs: update .all-contributorsrc [skip ci]

Author: allcontributors[bot]

.all-contributorsrc

@@ -27,6 +27,24 @@
         "maintenance",
         "test"
       ]
+    },
+    {
+      "login": "msmygit",
+      "name": "Madhavan",
+      "avatar_url": "https://avatars.githubusercontent.com/u/19366623?v=4",
+      "profile": "https://github.com/msmygit",
+      "contributions": [
+        "code",
+        "content",
+        "doc",
+        "design",
+        "maintenance",
+        "test",
+        "example",
+        "ideas",
+        "promotion",
+        "review"
+      ]
     }
   ]
 }