[Refactor/Feature] Get aisingapore.github.io/kapitan-hull to be generated properly

[Syakyr]

To get the example guide site to be generated properly, unlike the current status where the Jinja templates are messing with the formatting

[Syakyr]

We can use private variables to set up default generic generation:
https://cookiecutter.readthedocs.io/en/stable/advanced/private_variables.html

[Syakyr]

Taken off from 0.5.0 release due to alternate solution to generate guide site in b947c4d as GitLab Pages when uploading created repo in GitLab.