[docs] typo: "was is" should be "was"

[tomo cocoa]

Hello,

I am a Japanese translator of Python documents.

I found a typo on
https://docs.python.org/3.4/library/ossaudiodev.html#ossaudiodev.oss_mixer_device.get
.

   Raises OSSAudioError if an invalid control was is specified
   ↓
   Raises OSSAudioError if an invalid control was specified

Perhaps, a following sentence may also has a typo, but I am not sure.

   or OSError if an unsupported control is specified
   ↓
   or OSError if an unsupported control was specified


Regards,
cocoatomo

-- 
class Cocoatomo:
    name = 'cocoatomo'
    email_address = 'cocoatomo77 at gmail.com'
    twitter_id = '@cocoatomo'
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