That depends on the test. If “spelling error" is available as a category in the “Add Bug” form, then you can report spelling errors like any other Bug. Sometimes, the client doesn't want these to be reported as Bugs. In this case, your Birdmaster will let you know in the Test Description, but you can always mention spelling errors in the dislikes/negative feedback section of your test report.
If there are several errors in a single text, please submit one Bug for the entire text on that page -- not a new Bug for every error.