update rtd.yml file

Signed-off-by: foamyguy <foamyguy@gmail.com>

Merge pull request #10 from adafruit/fix_docs_link

fix docs link

Merge pull request #8 from adafruit/use_ruff

change to ruff

Merge pull request #7 from burtyb/hardware_flow_control

Add support for hardware flow control.

Merge pull request #6 from burtyb/patch-1

readinto can also return None

add sphinx configuration to rtd.yaml

Signed-off-by: foamyguy <foamyguy@gmail.com>

Merge pull request #3 from todbot/main

adafruit_pio_uart.receive() should return None on no bytes received

remove deprecated get_html_theme_path() call

Signed-off-by: foamyguy <foamyguy@gmail.com>

Merge pull request #2 from kbsriram/fix-ci

Fix lint issues and add license so CI builds.