Allow inlining img with github-stars class

[kaushalmodi]

Discussion: https://discourse.gohugo.io/t/how-to-update-css-for-hugodocs-for-a-pr/8641

This PR is in preparation for another PR on the hugoDocs repo. I am proposing adding a ghstars shortcode to the hugoDocs repo, which shows an svg image with star count for a GitHub repo. The SVG is generated dynamically by https://shields.io.

Without this PR, all images in nested-img class show in a new paragraph (block display) and fit the container width (100% width).

You can find my detailed reply here, but this is the end result I am looking for:

[maiki]

Pretty cool shortcode. 😄

I don't think there is any value to social proofing those links, and that is the only value I think adding the stars provides. It is also abrupt, and distracting. But that's my opinion.

A greater concern is adding complexity to the maintenance of the docs. Each shortcode used is to provide a convenient and hopefully self-evident shortcut to adding content to the site. Not everyone uses GitHub, and not all the tools on that page will have stars worth mentioning. If we want to encourage folks to be bold and add to the docs, we ought to make it as simple as possible.

Also, I am not a fan of loading dynamically created images into documentation. No need for shields.io to track visitors to the site.

[kaushalmodi]

That's convincing. I'll close the PR.