From the /posts documentation:
Most applications should use the question or answer specific methods, but /posts is available for those rare cases where any activity is of intereset.
intereset => interest
From /posts/{ids}/suggested-edits :
Returns suggsted edits on the posts identified in ids.
suggsted => suggested
From /questions/{id}/flags/add:
Casts a flag (including "close votes) against the question identified by id.
The double quote isn't terminated, I assume "close votes" was meant.
From /questions:
This is an and contraint,
(emphasis not mine; the typo is in the word constraint)
