I agree with @YR7. If you find a typo, might as well fix it. Errata same thing, this should be a resource for use.
For tables, quite often we have to restructure a bit - since Markdown keeps it super-simple, and we don’t want complex layout. Same thing for text order, when there are boxed texts in complex layout, you may need to move it to the more suitable place in the flow.
On Git/Github, a real benefit here is we have full history on all the texts. If you check any file and click history upper right, you’ll see every line changed (red removed, green added) and either in single line or block of lines.
As for “Why Markdown?”, I realize it may not be clear to everyone here. But there are several good reasons why Markdown may be the best “forever” format for the open-license text content:
Markdown's greatest practical strength for open-license content is that it is a universal source format. It is plain text, even human-readable without a renderer - and readily convert to any format (HTML, PDF, EPUB, DOCX, Google DOCS, MediaWIKI etc), natively version-controlled with Git, and readable by both humans and machines without ANY proprietary software. It carries no vendor lock-in and is durable across decades.
This write-once, publish-anywhere model means the canonical open-license text can stay clean and unencumbered, while feeding any wanted derivatives in the easiest possible manner (compare this with copy/pasting from PDF (everyone’s favorite…?), trying to convert .docx formats or manually reformatting plain text headings and tables).
You can straight open a markdown in google docs, word, (modern) notepad - or use Visual Code, Typora, Notepad++ (with plugin) etc or copy paste as-is to Websites (like GitHub), Blogs (WordPress, Medium), Notes (Notion, Obsidian), Chats (Slack, Discord), and Forums (this one!) as they all support Markdown natively.