Minor User Manual cleanups, make it clear environment is not really needed.
Minor User Manual cleanups, make it clear environment is not really needed.

tempbottle/Nuitka,kayhayen/Nuitka,wfxiang08/Nuitka,tempbottle/Nuitka,kayhayen/Nuitka,tempbottle/Nuitka,kayhayen/Nuitka,wfxiang08/Nuitka,wfxiang08/Nuitka,tempbottle/Nuitka,wfxiang08/Nuitka,kayhayen/Nuitka