Hi @mabbott ...

To report issues you find with any of the Canvas Guides here in the Community, you'll want to go to the Guide in question (in this case, the one that you posted above).  Then, scroll to the very bottom of the Guide.  You'll find a button called "Leave Feedback".  This will open up a form that you can fill out to report any issues or suggestions.  The Canvas Documentation Team will take a look at your feedback and make any necessary changes.

I hope this helps!