Add Vercel domain configuration for runkang10

domains/_vercel.runkang10.json

@@ -0,0 +1,9 @@
+{
+  "owner": {
+    "username": "runkang10",
+    "email": "chen.runkang10@gmail.com"
+  },
+  "records": {
+    "TXT": "vc-domain-verify=runkang10.is-a.dev,f3afb8b4605d5f333957"
+  }
+}