fix linter entry for 2.15
fix linter entry for 2.15

Change-Id: I71dba6fbbe2a2b4fbda0703aed40a42a6b8f4eac
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/221166
Reviewed-by: Brian Wilkerson <1f7641b6b14c52b9163524ab8d9aabff80176f21@google.com>
Commit-Queue: Phil Quitslund <3faecbdd7b7be83f493f037bf1d597e6bb9d0848@google.com>

dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk