Fix Circuitplay core and tools reference
Fix Circuitplay core and tools reference

While not plainly wrong, since the board is not contained in a 3rd party package, use the "baseline" reference method

Chris--A/Arduino,majenkotech/Arduino,me-no-dev/Arduino-1,me-no-dev/Arduino-1,majenkotech/Arduino,me-no-dev/Arduino-1,stickbreaker/Arduino,stickbreaker/Arduino,me-no-dev/Arduino-1,stickbreaker/Arduino,Chris--A/Arduino,Chris--A/Arduino,majenkotech/Arduino,stickbreaker/Arduino,majenkotech/Arduino,majenkotech/Arduino,Chris--A/Arduino,Chris--A/Arduino,Chris--A/Arduino,majenkotech/Arduino,me-no-dev/Arduino-1,stickbreaker/Arduino,me-no-dev/Arduino-1,me-no-dev/Arduino-1,stickbreaker/Arduino,stickbreaker/Arduino,Chris--A/Arduino,me-no-dev/Arduino-1,majenkotech/Arduino,Chris--A/Arduino