Typo fixes within the browser

Small fixes to text, e.g. to fix a typo, can be quickly made within the web browser using the steps below. We suggest to use the full authoring via Codespaces if you are changing anything more significant, so that you can preview your edits.

1. From the main repository page, select the directory for the book you are fixing the typo in.
2. Navigate down the file structure to the source file. First click on source, then the relevant module (), then the section.
3. Either scroll through the source, or use the search function (CTRL+F or CMD+F in most browsers) to find the line of code you need to fix. Take note of this line number!
4. Scroll back to the top, and hit the pencil icon to edit the file.
5. Scroll down to the line number you noted, and make the change.