I saw this question: Is my interpretation of this sentence correct? which I interpreted as "could you check my translation", i.e. a proofreading question.
Searching meta, I could not find any opinion or policy on whether proofreading questions should be allowed. So should they?
Here are some other stack exchange sites which have discussed whether to allow proofreading:
Disallows proofreading in general, but if the text is short it's ok
Allowed as long as the area of concern is identified
Similar to ELL, the question needs to identify the area of concern