This commit corrects HTML semantic errors in browser instruction dialogs
displayed when a script is downloaded via browser.
Key changes:
- Fix HTML structure by removing `<ul>` and `<ol>` tags from `<p>`
elements
- Replace `<code>` with `<kbd>` for keyboard inputs
Other supporting changes:
- Improve clarity readability of some instructions
- Add CSS styles for `<kbd>`
5db8c6b591