MM-17620 - Web: Error when entering an invalid MFA token is unclear (#12238)

i18n/en.json

@@ -4192,7 +4192,7 @@
   },
   {
     "id": "mfa.validate_token.authenticate.app_error",
-    "translation": "Error trying to authenticate MFA token"
+    "translation": "Invalid MFA token."
   },
   {
     "id": "migrations.worker.run_advanced_permissions_phase_2_migration.invalid_progress",