Grammar check

As written:

Dawkins took back the list of names. “My deputy checked the headlights on the three cars. He said each one had a hole the size of a twenty-two.”

Grammar check hit on “hole.” I knew what it wanted to change to, but I checked anyway.

“Commonly confused words.

“Hole means an opening or a flaw.

“Whole means complete.”

A “whole the size of a twenty-two.” Maybe Grammar doesn’t know what a twenty-two is.