When sued the appropriate action is to immediately higher a qualified lawyer with expertise in the specific area. Then follow his advice. Until you do that... do not do ANYTHING.
Sure. That's explaining what to do, which was already established. I asked about how to do that. "Do not do ANYTHING" is easy advice to give, but very hard to implement.
In this age of technology that tries to predict and guess our intentions based on patterns and hand wavy algorithms, it's also safe to assume that autocorrect just outright got it wrong when it corrected an entire phrase. Much as grammatical faux pas irritate my mild obsessiveness, I've learned to just let them slide. Personally, I try not to let such edits slip past me, but they often do. It's usually IM and the person on the other end gets a good laugh, but the intent is typically evident.