Update mycroft.conf (#1869)
Update mycroft.conf (#1869)

Make it clearer how to blacklist skills, e.g. it's the `basename()` of the directory where the skill lives.
forslund/mycroft-core,Dark5ide/mycroft-core,MycroftAI/mycroft-core,MycroftAI/mycroft-core,Dark5ide/mycroft-core,linuxipho/mycroft-core,linuxipho/mycroft-core,forslund/mycroft-core