fix ios regex error

audon-fe/src/assets/utils.js

@@ -3,7 +3,7 @@ import router from "../router";
 
 export const validators = {
   fqdn: helpers.regex(
-    /(?=^.{4,253}$)(^((?!-)[a-zA-Z0-9-]{1,63}(?<!-)\.)+[a-zA-Z]{2,63}$)/
+    /^([a-zA-Z0-9]{1}[a-zA-Z0-9-]{0,62})(\.[a-zA-Z0-9]{1}[a-zA-Z0-9-]{0,62})*?(\.[a-zA-Z]{1}[a-zA-Z0-9]{0,62})\.?$/
   ),
 };