pygame.music.play() looping docs consistent with pygame and SDL behaviour

[MyreMylar]

Changes the pygame docs to correctly describe the existing behaviour of music.play(), which basically mirrors the behaviour of SDLMix_PlayMusic.

In SDL the behaviour of the loops variable is inconsistent between Sounds/Channels and Music and so pygame is too, see the SDL docs for evidence:

SDL Docs:

Mix_PlayMusic: https://www.libsdl.org/projects/SDL_mixer/docs/SDL_mixer.html#SEC57
Mix_PlayChannel: https://www.libsdl.org/projects/SDL_mixer/docs/SDL_mixer.html#SEC28

The docs say they are for Mixer 1.2 but they seem to be using the same docs for SDL 2, and the behaviour is the same.

Downsides:

• loops variable is inconsistent between Sounds.play() and music.play()

Upsides:

• We don't break the code of the 8,000 people who are using the loops value in it's current, wrongly documented, fashion.

[illume]

👍 thanks