Fix anchor link to cooperative groups in CUDA programming guide

[wence-]

Description

Closes #273.

Checklist

• New or existing tests cover these changes.
• The documentation is up to date with these changes.

[rapids-bot]

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[miscco]

Hi @wence-

Thanks a lot for bringing the PR over here. Could you please add "[skip-tests]" to your commit message. We want to avoid running extensive CI on documentation changes

[wence-]

Hi @wence-

Thanks a lot for bringing the PR over here. Could you please add "[skip-tests]" to your commit message. We want to avoid running extensive CI on documentation changes

Sure, does it need to be in the "subject line" or is anywhere in the body ok?

[wence-]

Done.

[miscco]

Hi @wence-
Thanks a lot for bringing the PR over here. Could you please add "[skip-tests]" to your commit message. We want to avoid running extensive CI on documentation changes

Sure, does it need to be in the "subject line" or is anywhere in the body ok?

That is a very good question, I believe it should be in the subject line. We will see and learn ;)

[miscco]

/ok to test

[miscco]

Thanks a lot for the contribution 🎉