Suggestion: Add link to report issues on the same pages next to the material (Pega Academy)
I often come across small problems like typos, ambiguous phrasing, etc. Right now I'd have to create a separate post here about each of them. This is quite cumbersome, I'd recommend that you place a link to report issues directly on the pages next to the material.
I think that'd help you to get a more feedback and improve the quality of the material.