Fixed Nested Docs URL conflicts

[sarfarazsiddiquii]

Description

The issue (ref #5879) existed due to the code was only considering the last part of the slug to fetch the page. ref examples\nested-docs\next-app\app\[...slug]\page.tsx

The fix was to use the full path of the slug to fetch the page.

• [x] I have read and understand the CONTRIBUTING.md document in this repository.

Type of change

• [x] Bug fix (non-breaking change which fixes an issue)

Checklist:

• [x] Existing test suite passes locally with my changes

[sarfarazsiddiquii]

@denolfe i belive the issue is solved can you please review it and tell me if any changes are required. Thanks

[denolfe]

Examples will be reworked for 3.0. If still an issue after, feel free to open a new PR.