fix dox mox

Author: ladyada

docs/conf.py

@@ -22,7 +22,7 @@
 # autodoc module docs will fail to generate with a warning.
 autodoc_mock_imports = ["rtc", "supervisor", "pulseio", "audioio", "displayio", "neopixel",
                         "microcontroller", "adafruit_touchscreen", "adafruit_bitmap_font",
-                        "adafruit_display_text", "adafruit_esp32spi", "settings"]
+                        "adafruit_display_text", "adafruit_esp32spi", "secrets"]
 
 
 intersphinx_mapping = {'python': ('https://docs.python.org/3.4', None),'BusDevice': ('https://circuitpython.readthedocs.io/projects/busdevice/en/latest/', None),'CircuitPython': ('https://circuitpython.readthedocs.io/en/latest/', None)}