Fix for basic-tutorial-7.c (Simple multithreaded example)

[Charlie Turner]

On 04/09/17 13:31, Sebastian Dröge wrote:
> I fixed that a while ago already:
> https://cgit.freedesktop.org/gstreamer/gst-docs/commit/?id=1a9f0541be419798eacc6fedf50cadadebca352b
> 
> Is it still wrong on the website or somewhere?

Now I know where the repo is, thanks. It's still wrong on this page,

https://gstreamer.freedesktop.org/documentation/tutorials/basic/multithreading-and-pad-availability.html

Thanks for the tutorials, they have been very helpful.

BR,
--Charlie.