testing: document test.bench flag in the testing pkg's docs

[campoy]

What steps will reproduce the problem?
1. Go to http://golang.org/pkg/testing
2. Try to find what to type in test.bench, or what type the flag is

What is the expected output? What do you see instead?
Something like what we can find in the testing/benchmark.go code:
- regular expression to select benchmarks to run

Please use labels and text to provide additional information.

[robpike]

Comment 1:

Labels changed: added priority-soon, removed priority-triage.

[robpike]

Comment 2:

Owner changed to @robpike.

[rsc]

Comment 4:

The testing flags are documented at
http://golang.org/cmd/go/#Description_of_testing_flags and 'go help
testflag'. Perhaps a link to those is all that is needed in package
testing itself.
Russ

[adg]

Comment 5:

I think Francesc can do this.

Owner changed to @campoy.

[campoy]

Comment 6:

I created this issue, please take a look: http://golang.org/cl/6553068

[rsc]

Comment 7:

Francesc, it looks like you are not subscribed to
golang-dev@googlegroups.com. Please do subscribe, even if you subscribe in
'no email' mode, so that we can whitelist you for posting.

[campoy]

Comment 8:

This issue was closed by revision b7cbfe6.

Status changed to Fixed.