Update uCNC settings descriptions

This was part of #169, thanks @Paciente8159

OpenCNCPilot/Resources/ucnc_setting_codes_en_US.csv

@@ -3,8 +3,8 @@
 "1","Step idle delay","milliseconds","Sets a short hold delay when stopping to let dynamics settle before disabling steppers. Value 255 keeps motors enabled with no delay."
 "2","Step pulse invert","mask","Inverts the step signal. Set axis bit to invert (00000ZYX)."
 "3","Step direction invert","mask","Inverts the direction signal. Set axis bit to invert (00000ZYX)."
-"4","Invert step enable pin","boolean","Inverts the stepper driver enable pin signal."
-"5","Invert limit pins","boolean","Inverts the all of the limit input pins."
+"4","Invert step enable pin","mask","Inverts the stepper driver enable pin signal."
+"5","Invert limit pins","mask","Inverts the limit input pins."
 "6","Invert probe pin","boolean","Inverts the probe input pin signal."
 "7","Invert control pins","mask","Inverts the control input pins signal. Bit 0 (Emergency stop) has no effect."
 "10","Status report options","mask","Alters data included in status reports."