Autocorrect in Mail doesn't recognize the word "I'm"
I just bought a new 14 inch MacBook Pro, am running Monterey version 12.0.1, and this morning I noticed a problem with Mail. When composing an email, every time I type the word I'm, Mail autocorrects it to Im. I have no idea why it thinks Im is a word and I'm isn't, but no matter how many times I retype it, it does that same thing over and over -- I'm becomes Im. Can someone tell me how to fix this?
MacBook, OS X 10.11