Add dns.pub to custom_routing_white (#3668)

V2rayNG/app/src/main/assets/custom_routing_white

@@ -39,6 +39,7 @@
     "outboundTag": "direct",
     "domain": [
       "domain:dns.alidns.com",
+      "domain:dns.pub",
       "domain:doh.pub",
       "domain:dot.pub",
       "domain:doh.360.cn",
@@ -78,4 +79,4 @@
     "port": "0-65535",
     "outboundTag": "proxy"
   }
-]
+]