1. Write some docs in a text editor.
2. Using git, send your new docs to GitHub.
3. Follow some steps on GitHub to finish adding your new docs to the site.
4. A process runs which takes your changes, builds everything into a website (using the static site generator), and deploys it to a server.
No!
This is not about websites. It's about building manuals.
The result could be a book, an ePub, a PDF, or -- almost incidentally -- a website.
1. Write some docs in a text editor.
2. Using git, send your new docs to GitHub.
3. Follow some steps on GitHub to finish adding your new docs to the site.
4. A process runs which takes your changes, builds everything into a website (using the static site generator), and deploys it to a server.