docs/machine: Sort machine classes in logical order, not alphabetically.
docs/machine: Sort machine classes in logical order, not alphabetically.

The list starts with the simplest functionality - GPIO, proceeds to
communication interfaces (UART, SPI, I2C), the to time(r) related
things, then everything else.

adafruit/circuitpython,pramasoul/micropython,TDAbboud/micropython,SHA2017-badge/micropython-esp32,bvernoux/micropython,HenrikSolver/micropython,selste/micropython,TDAbboud/micropython,infinnovation/micropython,pfalcon/micropython,MrSurly/micropython-esp32,alex-robbins/micropython,pfalcon/micropython,oopy/micropython,hiway/micropython,ryannathans/micropython,selste/micropython,trezor/micropython,AriZuu/micropython,trezor/micropython,Timmenem/micropython,selste/micropython,blazewicz/micropython,SHA2017-badge/micropython-esp32,MrSurly/micropython,kerneltask/micropython,lowRISC/micropython,MrSurly/micropython,alex-robbins/micropython,tralamazza/micropython,henriknelson/micropython,blazewicz/micropython,PappaPeppar/micropython,adafruit/circuitpython,infinnovation/micropython,torwag/micropython,MrSurly/micropython,pozetroninc/micropython,kerneltask/micropython,chrisdearman/micropython,chrisdearman/micropython,AriZuu/micropython,adafruit/micropython,TDAbboud/micropython,MrSurly/micropython-esp32,Timmenem/micropython,blazewicz/micropython,Timmenem/micropython,torwag/micropython,torwag/micropython,hiway/micropython,swegener/micropython,bvernoux/micropython,kerneltask/micropython,tobbad/micropython,pfalcon/micropython,MrSurly/micropython-esp32,SHA2017-badge/micropython-esp32,tralamazza/micropython,SHA2017-badge/micropython-esp32,HenrikSolver/micropython,dmazzella/micropython,dmazzella/micropython,MrSurly/micropython-esp32,lowRISC/micropython,oopy/micropython,TDAbboud/micropython,ryannathans/micropython,Timmenem/micropython,dmazzella/micropython,alex-robbins/micropython,TDAbboud/micropython,MrSurly/micropython,infinnovation/micropython,trezor/micropython,PappaPeppar/micropython,selste/micropython,deshipu/micropython,deshipu/micropython,adafruit/circuitpython,torwag/micropython,tobbad/micropython,torwag/micropython,micropython/micropython-esp32,hiway/micropython,AriZuu/micropython,adafruit/circuitpython,SHA2017-badge/micropython-esp32,bvernoux/micropython,HenrikSolver/micropython,trezor/micropython,swegener/micropython,adafruit/circuitpython,blazewicz/micropython,ryannathans/micropython,adafruit/micropython,pozetroninc/micropython,selste/micropython,micropython/micropython-esp32,oopy/micropython,henriknelson/micropython,henriknelson/micropython,henriknelson/micropython,tralamazza/micropython,chrisdearman/micropython,infinnovation/micropython,swegener/micropython,PappaPeppar/micropython,pozetroninc/micropython,AriZuu/micropython,HenrikSolver/micropython,pozetroninc/micropython,dmazzella/micropython,pramasoul/micropython,micropython/micropython-esp32,lowRISC/micropython,PappaPeppar/micropython,pfalcon/micropython,oopy/micropython,kerneltask/micropython,tralamazza/micropython,blazewicz/micropython,deshipu/micropython,pfalcon/micropython,PappaPeppar/micropython,AriZuu/micropython,hiway/micropython,micropython/micropython-esp32,HenrikSolver/micropython,adafruit/micropython,trezor/micropython,swegener/micropython,Timmenem/micropython,adafruit/circuitpython,kerneltask/micropython,lowRISC/micropython,pramasoul/micropython,bvernoux/micropython,swegener/micropython,henriknelson/micropython,pramasoul/micropython,micropython/micropython-esp32,tobbad/micropython,pramasoul/micropython,deshipu/micropython,pozetroninc/micropython,alex-robbins/micropython,alex-robbins/micropython,tobbad/micropython,bvernoux/micropython,tobbad/micropython,ryannathans/micropython,chrisdearman/micropython,lowRISC/micropython,MrSurly/micropython,infinnovation/micropython,oopy/micropython,hiway/micropython,adafruit/micropython,MrSurly/micropython-esp32,deshipu/micropython,adafruit/micropython,chrisdearman/micropython,ryannathans/micropython