website: missing "Back to the top" anchor for the custom linter

[alexandear]

Welcome

• Yes, I'm using a binary release within 2 latest releases. Only such installations are supported.
• Yes, I've searched similar issues on GitHub and didn't find any.
• Yes, I've read the typecheck section of the FAQ.
• Yes, I've tried with the standalone linter if available (e.g., gocritic, go vet, etc.).
• I agree to follow this project's Code of Conduct

Description of the problem

There is a missing anchor for the "Back to the top" link under the "Custom" linter section.

Steps to Reproduce

1. Open https://golangci-lint.run/usage/linters/#custom
2. Click the "Back to the top" link or go directly to https://golangci-lint.run/usage/linters/#list-item-custom
3. Observe that nothing happens

Expected

Clicking the link should scroll the page to the top, just like it does for other linters.

Actual

Clicking the link has no effect — likely because the anchor #list-item-custom is missing or not attached to any element.

Validation

• Yes, I've included all information above (version, config, etc.).

Supporter

• I am a sponsor/backer through GitHub or OpenCollective

[ldez]

I'm currently rewriting the site; the approach will be different.

I will close this issue because I don't want to change the website during this work.