[CQ] correct options fix test docs

Change-Id: Ib87ca966872e7ea165d866a1c95fd8669b6852c2
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/407622
Auto-Submit: Phil Quitslund <[email protected]>
Reviewed-by: Samuel Rawlins <[email protected]>
Commit-Queue: Samuel Rawlins <[email protected]>

Author: pq

pkg/analysis_server/test/src/services/correction/fix/analysis_options/test_support.dart

@@ -16,7 +16,7 @@ import 'package:test/test.dart';
 import 'package:yaml/yaml.dart';
 
 /// A base class providing utility methods for tests of fixes associated with
-/// errors in Dart files.
+/// errors in analysis options files.
 class AnalysisOptionsFixTest with ResourceProviderMixin {
   Future<void> assertHasFix(
     String initialContent,