Document --yes option to skip manual confirmation when applying a schema snapshot (#11356)

There's an undocumented `--yes` option, which is a rather valuable information and should be documented. For example, when you run the migration step in a CI/CD workflow, you don't want the manual prompt.

docs/reference/cli.md

@@ -98,6 +98,12 @@ To apply the generated snapshot, run
 npx directus schema apply ./path/to/snapshot.yaml
 ```
 
+To skip manual verification (e.g. when running in a CI workflow), run
+
+```
+npx directus schema apply --yes true ./path/to/snapshot.yaml
+```
+
 ### Creating Users
 
 To create a new user with a specific role, run