fix: update Code of Conduct governance document link in CODE_OF_CONDUCT.md

[sujin-park]

Requirements

• Filling out the template is required. Any pull request that does not include enough information to be reviewed in a timely manner may be closed at the maintainers' discretion.
• All new code requires tests to ensure against regressions.

Description of the Change

"Code of conduct governance" text and link seem to be connected incorrectly. It has been updated.

Before: https://github.com/openjs-foundation/bootstrap/blob/master/proposals/stage-1/CODE_OF_CONDUCT/FOUNDATION_CODE_OF_CONDUCT_REQUIREMENTS.md

After: https://github.com/openjs-foundation/cross-project-council/blob/master/FOUNDATION_CODE_OF_CONDUCT_REQUIREMENTS.md

Alternate Designs

N/A

Why should this be in core?

N/A

Benefits

People will be able to click on the links, and get to the content they expected.

Possible Drawbacks

N/A

Applicable issues

N/A

[jsf-clabot]

All committers have signed the CLA.

[coveralls]

Coverage increased (+0.06%) to 93.849% when pulling ccd2244 on sujin-park:fix-coc-document-link into 78d979d on mochajs:master.

[outsideris]

LGTM