ci: fix pytest generic env markers

examples/storage/spiffs/pytest_spiffs_example.py

@@ -1,6 +1,5 @@
 # SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
 # SPDX-License-Identifier: Unlicense OR CC0-1.0
-
 import re
 
 import pytest
@@ -9,6 +8,7 @@ from pytest_embedded import Dut
 
 @pytest.mark.esp32
 @pytest.mark.esp32c3
+@pytest.mark.generic
 def test_examples_spiffs(dut: Dut) -> None:
     message_list = (rb'example: Initializing SPIFFS',
                     rb'example: Partition size: total: \d+, used: \d+',