Personalized correction of Articles (grammar and style) - where to start

hi, i am totally new to AI/ML/LLM etc.
I work at correcting news articles in French, mainly style, and I would like to train a model to help me to my work, i.e. correct articles the way I do, in my personal style.

I guess I should prepare a training set by collecting a large set of articles, before and after my editing.
How do I continue from there?
What tool, model, API, technology etc?

BTW I receive the articles mostly as Word documents, and I also do the corrections in Word.