Nope.
I have a computer with Windows and Linux on it, what is it ? A PC or not ? It's not 1990 anymore !
PC = Personal Computer
OS = Operating system
This is confusing = this need to be edited.
In any case, this debate has already taken place.
"Games for PC" is a marketing slogan used by Microsoft to confirm its dominant position in the minds of players. But we are in 2015, and I guess we are smart enough to use the words according to their etymological definition. Furthermore, this is confusing for some people (It's just like writing on a playstation game: "Console Game"). Have a little respect for users who choose to use other OS.
Now, in 2015, we use :
- OS : Windows/MacOS/Linux/etc...
Just open your FTP, open the code of the page, change the words, add a little "Windows" logo if you want, but just do it !
https://media.giphy.com/media/87xihBthJ1DkA/giphy.gif