docs/conf.py: Use https for intersphinx link to docs.python.org.
docs/conf.py: Use https for intersphinx link to docs.python.org.

To get rid of warning when building the docs saying there's a redirect from
http: to https:.

pramasoul/micropython,henriknelson/micropython,adafruit/circuitpython,henriknelson/micropython,pramasoul/micropython,trezor/micropython,pfalcon/micropython,pozetroninc/micropython,MrSurly/micropython,bvernoux/micropython,kerneltask/micropython,pramasoul/micropython,selste/micropython,trezor/micropython,adafruit/circuitpython,trezor/micropython,tobbad/micropython,henriknelson/micropython,selste/micropython,selste/micropython,pfalcon/micropython,MrSurly/micropython,bvernoux/micropython,trezor/micropython,adafruit/circuitpython,selste/micropython,henriknelson/micropython,bvernoux/micropython,MrSurly/micropython,pozetroninc/micropython,pfalcon/micropython,MrSurly/micropython,tobbad/micropython,pfalcon/micropython,kerneltask/micropython,pramasoul/micropython,selste/micropython,pozetroninc/micropython,henriknelson/micropython,kerneltask/micropython,adafruit/circuitpython,pfalcon/micropython,tobbad/micropython,bvernoux/micropython,pozetroninc/micropython,MrSurly/micropython,bvernoux/micropython,kerneltask/micropython,pozetroninc/micropython,adafruit/circuitpython,adafruit/circuitpython,pramasoul/micropython,tobbad/micropython,tobbad/micropython,kerneltask/micropython,trezor/micropython