Hi there,
I think I might have spotted a possible typo on page 10 in the pdf.
In the screenshot below I have highlighted the word "harm" in yellow which I think should be changed to "harmful" (since I assume it refers to the word "content").

So that the sentence would go like this:
... the RLHF algorithm is particularly useful to mitigate the issues of generating harmful or toxic content for LLMs ...