Chore: Fix script to generate reference page of custom resources in docs

[randmonkey]

What this PR does / why we need it:

Fixes the script to generate reference page of custom resources in the docs repo.
create docs PR job run on the branch: https://github.com/Kong/kubernetes-ingress-controller/actions/runs/6977712012

Which issue this PR fixes:

Special notes for your reviewer:

PR Readiness Checklist:

Complete these before marking the PR as ready to review:

- [ ] the CHANGELOG.md release notes have been updated to reflect any significant (and particularly user-facing) changes introduced by this PR

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (63253d7) 76.8% compared to head (4220b91) 76.8%.
Report is 15 commits behind head on main.

❗ Current head 4220b91 differs from pull request most recent head 9155c44. Consider uploading reports for the commit 9155c44 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #5232     +/-   ##
=======================================
- Coverage   76.8%   76.8%   -0.1%     
=======================================
  Files        170     170             
  Lines      19050   19056      +6     
=======================================
- Hits       14649   14644      -5     
- Misses      3575    3586     +11     
  Partials     826     826             

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[czeslavo]

Why change from include to inlcude_cached? I recently changed that to include to match manual edits on docs.konghq.com side (I believe they were made for a reason there, not sure though what was it exactly).

[randmonkey]

Why change from include to inlcude_cached? I recently changed that to include to match manual edits on docs.konghq.com side (I believe they were made for a reason there, not sure though what was it exactly).

It was just a revert of the original change in #5094. According to the README in docs repo https://github.com/Kong/docs.konghq.com/blob/main/README.md#include-check, The include_cache is only required when referencing page variables in _include files, so it is OK to use include.

[randmonkey]

New job here: https://github.com/Kong/kubernetes-ingress-controller/actions/runs/6978241095 and PR here: Kong/docs.konghq.com#6555