Reword comments in example code for clarity
Reword comments in example code for clarity

When I first saw the example code, I was confused at how the code was looping. I didn’t understand how issuing just two `goToFloor` commands would make them repeat forever, because I assumed that being idle just meant the elevator hadn’t been issued any commands yet. I also didn’t understand that `goToFloor` really meant “queue going to that floor” rather than “set the destination to that floor”, so I thought the first `goToFloor` would be overwritten.

This change explains the looping with the word “whenever”, and explains the meaning of “idle” clearly in parentheses. It also mentions “queued destinations”, hinting that `goToFloor` adds to a queue. This should help newcomers understand the API better from the example code, making it easier for them to improve their algorithm later.

tksugimoto/elevatorsaga,Endika/elevatorsaga,maxsites/elevator,tcort/elevatorsaga,beni55/elevatorsaga,tksugimoto/elevatorsaga,magwo/elevatorsaga,maxsites/elevator,beni55/elevatorsaga,Endika/elevatorsaga,tksugimoto/elevatorsaga,koalazak/elevatorsaga,tcort/elevatorsaga,maxsites/elevator,koalazak/elevatorsaga,tcort/elevatorsaga,kawasima/elevatorsaga,magwo/elevatorsaga,magwo/elevatorsaga,kawasima/elevatorsaga,kawasima/elevatorsaga,beni55/elevatorsaga,Endika/elevatorsaga,koalazak/elevatorsaga