[typo][fix] remove double quotes from regx

frappe/website/js/website.js

@@ -334,7 +334,7 @@ $.extend(frappe, {
 // Utility functions
 
 function valid_email(id) {
-	return /"[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?"/.test(id.toLowerCase());
+	return /[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?/.test(id.toLowerCase());
 }
 
 var validate_email = valid_email;