Update CODE_OF_CONDUCT links

[idanidan29]

this will the update the borken link https://github.com/openjs-foundation/cross-project-council/blob/HEAD/conduct/FOUNDATION_CODE_OF_CONDUCT_REQUIREMENTS.md#code-of-conduct-panel
with the link https://github.com/openjs-foundation/cross-project-council/blob/b2425f51d31db0755ccfd2dadffa2666f5b6dbcf/conduct/COC_POLICY.md

and will update the broken link: https://github.com/openjs-foundation/cross-project-council/tree/HEAD/proposals/approved/CODE_OF_CONDUCT
with the link:https://github.com/openjs-foundation/cross-project-council/blob/b2425f51d31db0755ccfd2dadffa2666f5b6dbcf/CODE_OF_CONDUCT.md

Closes #34

[idanidan29]

Hi @jdesrosiers, please merge when you can, as this issue affects all the other repositories and the site. I tagged you because it's in a different repo, and I thought otherwise no maintainer wouldn't notice this.

[jdesrosiers]

I tagged you because it's in a different repo, and I thought otherwise no maintainer wouldn't notice this.

Don't worry about tagging people. The necessary people will get notifications automatically.

In any case, this probably should have gone through discussion to verify that the new link is correct. I'm certainly not going to make that call unilaterally because this isn't my area of expertise.