Update guides.yml

[cannandev]

Pull request summary

Updates all links to the Methods site.

Reminder - please do the following before assigning reviewer

• [ ] Update readme
• [ ] For frontend changes, ensure design review
• [ ] For content changes beyond typos, add Ron Bronson as a reviewer

And make sure that automated checks are ok

• fix houndci feedback
• ensure tests pass
• federalist builds
• no new SNYK vulnerabilities are introdcued