I only pointed out the vocabulary mistake, I didn't have a bad intention.
I only pointed out the incorrect word, I didn't mean anything by it.
"私は単語の間違えを指摘しただけで、悪気はなかったんだ" という意味です.
私は単語の間違え: the vocabulary mistake / incorrect word.
を指摘しただけで: I only pointed out.
悪気はなかったんだ : I didn't have a bad intention / I didn't mean anything by it.
モロッコ 
