In the Importing templates section of the documentation, a cross-reference is being displayed as plain text instead of rendering as a clickable link. This impacts navigation and user experience, as readers cannot directly access the referenced content.

Steps to Reproduce:

• Navigate to the Customizing RHDH -> 4.5 Importing templates section in the documentation.
• Observe that the cross-reference is not rendered as a link but shown as "link: {have configured integrating-with-github-book-url}

  [Developer Hub integration with GitHub]".

Expected Behavior:
The cross-reference should be rendered as a clickable link, allowing users to directly navigate to the referenced content.