docs: update .all-contributorsrc [skip ci]

allcontributors[bot] · hackjutsu · commit 5ba1d70d4ddd · 2021-06-21T23:19:26.000-07:00
diff --git a/.all-contributorsrc b/.all-contributorsrc
@@ -273,6 +273,15 @@
       "contributions": [
         "doc"
       ]
+    },
+    {
+      "login": "yuhang-dong",
+      "name": "董雨航",
+      "avatar_url": "https://avatars.githubusercontent.com/u/20642641?v=4",
+      "profile": "https://github.com/yuhang-dong",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "contributorsPerLine": 7,
