content: fix example in "Go concurrency patterns" article

To quote Tim Scheuermann, who alerted me to this issue:

	The text states that the channel should be buffered for the last
	example to work, but the channel is already buffered. I tried to
	use the codereview tool to commit the patch, but it refuses to
	work on a github repository. The fix is trivial, remove the
	buffer from line 2 of the example.

Thanks to Ivan Kurnosov for finding it in the first place.

Change-Id: I003f1fc0cbbb645be776eeb55d46ee3462fdf4d7
Reviewed-on: https://go-review.googlesource.com/36670
Reviewed-by: Chris Broadfoot <cbro@golang.org>

0 files changed, 0 insertions, 0 deletions