* fix(docs): Use a working match substitution in md_image_sizing hook
This fixes odd page segment duplicating inside themselves
* ci(docs): Avoid triggering deploy_docs on PR
* fix(docs): Use a more consistent image url replacing in fetch_discourse_md
* fix(docs): Prevent youtube video from embeding in links
* chore(docs): Move embed_youtube hook to on_page_content step
* docs: Add 'md_image_sizing' hook
This will match image sizes with discourse ones