How do you delete a word from the user dictionary?

[danielklein_hmrreferrals]

I accidentally hit "ignore" instead of the suggested correction. How do I remove the incorrect entry from the dictionary?

[bgannin]

This isn't actually related to Sourcetree… that said, what OS are you on?

[danielklein_hmrreferrals]

I'm using WIndows 10. I was writing my commit message. I can't find an option in Sourcetree to edit the dictionary or undo a mistake.