Enhancement: Remove details shortcode

[awtj8o81ryywg793]

Since the details shortcode is currently employed only once in the following file:

matrix.org/content/blog/2022/09/2022-09-02-this-week-in-matrix/index.md

Line 18 in f959a0e

{% details(summary="[uhoreg](https://matrix.to/#/@hubert:uhoreg.ca) reports") %}

I propose that we remove the shortcode entirely and update the single markdown file where it is used to align with the formatting of the rest of the post and the blog as a whole.