Add missing key for required tag name

src/translations/en.json

@@ -1342,6 +1342,7 @@
             "update": "Update",
             "create": "Create",
             "create_and_write": "Create and Write",
+            "required_error_msg": "[%key:ui::panel::config::zone::detail::required_error_msg%]",
             "usage": "A tag can trigger an automation when scanned, you can use NFC tags, QR codes or any other kind of tag. Use our {companion_link} to write this tag to a programmable NFC tag or create a QR code below.",
             "companion_apps": "companion apps"
           }