[doc] add description of common switches (#5484)
[doc] add description of common switches (#5484)


abtink/openthread,openthread/openthread,openthread/openthread,srickardti/openthread,srickardti/openthread,openthread/openthread,abtink/openthread,openthread/openthread,jwhui/openthread,jwhui/openthread,jwhui/openthread,abtink/openthread,abtink/openthread,srickardti/openthread,jwhui/openthread,srickardti/openthread