CONTRIBUTING.md: update the command.

[fuweid]

Update the command to go get -u golang.org/x/lint/golint to make it consistent with `README.md'.

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Message from Brad Fitzpatrick:

Patch Set 1:

Well, golang.org/x/lint/golint is a 404, so I doubt this is correct (yet?).

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Message from Wei Fu:

Patch Set 1:

Patch Set 1:

Well, golang.org/x/lint/golint is a 404, so I doubt this is correct (yet?).

@brad, yes. but the github.com/golang/lint/golint uses golang.org/x/lint as remote package.

Ping @andrew. We have workaround for this in #397. Could you please take a look? Thanks

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[brad]

@fuweid I think you mean @bradfitz

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Message from Brad Fitzpatrick:

Patch Set 1: Code-Review+2

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This PR is being closed because golang.org/cl/108995 has been merged.