Update index.md (#4473)
Update index.md (#4473)

Alphabetise imports in example, as per `tslint:latest`
JoshuaKGoldberg/tslint,mprobst/tslint,JoshuaKGoldberg/tslint,palantir/tslint,mprobst/tslint,palantir/tslint,palantir/tslint,JoshuaKGoldberg/tslint,mprobst/tslint