Allow default hugo feature /tags and /categories works.

[iamshaynez]

Feature Description

Allow default hugo feature /tags and /categories work.

Problem/Solution

Default tags pages and categories based lists are generated in the sitemap.xml, however they are all empty without posts data.

For example: officail site link https://imfing.github.io/hextra/tags/example/

There should be one post listed, however all the tags links(as well as categories) are empty pages.

Alternatives Considered

Or is this a bug?

Additional Context