Updated absolute URL to cucumber docs

[declark]

Description

Describe your changes in detail

Motivation & context

Why is this change required? What problem does it solve?
If it fixes an open issue, please link to the issue here, e.g. "Fixes #99"

Type of change

• Refactoring/debt (improvement to code design or tooling without changing behaviour)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds new behaviour)
• Breaking change (will cause existing functionality to not
  work as expected)

Checklist:

• I have read the CONTRIBUTING document.
• My change needed additional tests
  • I have added tests to cover my changes.
• My change requires a change to the documentation.
  • I have updated the documentation accordingly.
• I have added an entry to the "Unreleased" section of the CHANGELOG, linking to this pull request.

[aurelien-reeves]

Great! It works fine, thanks @declark 🙏

(It is so simple ... why didn't we found that ourselves!?)

[aurelien-reeves]

A lot of absolute URL are still part of the content. Is there any reason for that @declark?

[declark]

A lot of absolute URL are still part of the content. Is there any reason for that @declark?

Yes, those pages live on the cucumber.io website as part of a different CMS. We proxy in the docs. The only adjustment needed was to update the single hardcoded url to the docs so that it doesn't direct users away from the preview build.