doc/play: update URL for concurrent pi

The old link died; replace with an archive.org copy.

Fixes #13345.

Change-Id: Ic4a7fdcf258e1ff3b4a02ecb4f237ae7db2686c7
Reviewed-on: https://go-review.googlesource.com/18335
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Russ Cox 2016-01-06 15:12:43 -05:00 committed by Brad Fitzpatrick
parent 194a5c3e61
commit 4391aca850

View file

@ -1,5 +1,5 @@
// Concurrent computation of pi.
// See http://goo.gl/ZuTZM.
// See https://goo.gl/la6Kli.
//
// This demonstrates Go's ability to handle
// large numbers of concurrent processes.