I recommend you print left and right part, even if you need only one replacement. Reason is that these parts are not 100% same size as originals. If you leave one original part, keyboard might not be levelled.
Print settings:
After print is finished, cut material left from supports on pins, so the pins fit holes. If pins still don't fit holes, you can cut pins a little to fit.
Gcode file already has supports. Gcode settings:
The author hasn't provided the model origin yet.