Fix documentation formatting

[krisjdev]

This PR fixes documentation formatting as a part of the work done for the datasheet template.

Each commit is only done per-project, so they can be cherry-picked or dropped if needed. Each commit may update info.yaml, info.md or both.

Projects were edited to:

• remove unused sections (such as when "External Hardware" explained to be none/not relevant)
• remove default filler text in sections where the user had not deleted it but added their own content
• fix typos
• add images which were referred to by a URL previously
• remove non-descriptive alt text, and add descriptive ones where possible
• resize images so they fit better on the page
• fix broken links (when parsed with pandoc, they must be encased in <> or use pretty text)
• fix list formatting
• fix heading formatting (some users use H1 when it should be set to H2)
  • H1, when transformed by pandoc, turns into regular text
• remove H1 text if it matched the title of the project
• fix table formatting
• fix syntax issues (text too close causing features to not render properly etc)
• remove HTML tags (img, br, a, etc)
• remove horizontal lines (in markdown: ---) (pandoc transforms this into incorrect typst syntax)
• remove user's own pinout table (which is identical to what is auto-generated)
• replace user strings for pinouts in info.yaml with empty string if it contained phrases like "unused", "not used", "N/A" or other variations which indicated the pin was unused
• escape characters like @ which were interpreted as being a citation by pandoc