1. There's a technical fix for stupidity. There isn't.
2. That the system can dynamically automatically add the right link to the specific documentation that user requires based on something they typed. Think of the overhead associated with upkeep on that many FAQs/Manuals and the number of revisions to whatever codebase and the fact that it can't be dynamic but has to be maintained.
3. People are lazy. You're suggesting a non-lazy approach. The best devs are intelligently-lazy (ask on P.SE if you don't believe me, I'll even give you the right question).