This is a discussion that's been partially addressed on the stack exchange meta with regards to "Too Localized" closure, but the particular issue of simple typographical errors is unresolved there...
Given this question, answered a couple of hours ago, I think it would be worth discussing.
How should we handle "questions" when the "answer" is that a user has a simple typographical error? Those questions don't appear to me to be "off topic" necessarily, but are (in my opinion) not very useful as part of a body of knowledge.
To be clear: I don't think "trivial" questions should be discouraged at all, people have different levels of skill, questions can still be good and accommodate that. But that isn't really the case I'm pointing to in this question; I'm asking specifically about typographical errors:
"oops I forgot a semi-colon", "it's
getByID", or in this case "I used a smart quote instead of a regular quote (somehow).