2 typos on the page

First typo: The indentation of code blocks like these could be adjusted at different viewport sizies, via a CSS Media Query.
Second typo: A working example of code snippets using CSS to modigy indentation width at different breakpoints.

Error 300 broken link:
The link to https://www.w3.org/WAI/WCAG21/working-examples/reflow-indenting.html the working example showing CSS to modify indentation width is (soft) broken.
It redirects to a error 300 help page that gives https://www.w3.org/WAI/WCAG21/working-examples/reflow-indenting (the link without .html) as an option. I don't know if it is something that matters or counts as wont-fix that the link doesn't link to the .html page.