Chavez Ravine is where Dodger Stadium is located. I read at least one article saying that after a sale, they might leave the ravine and build a new ballpark downtown.
Geographic names change over the years, as properties are developed and change character. Map makers keep up with those changes. "Chavez Ravine" was the former name of the property, not its widely accepted (except for some Mexican nationalists and some anti-Dodgers baseball fans) current name.