Co-authored-by: LB Johnston <mail@lb.ee>
- A shortcut for accessing StreamField blocks by name
- myst was building a doc link `streamfield` and also had a ref link `streamfield` which was causing conflicts
Relates to #8383 * Convert the image tag topic to Markdown * Convert the permissions usage to Markdown * Convert the topic of snippets to Markdown * Convert the streamfield topic to markdown * Convert the writing templates doc to Markdown
