[core] Better variable name in dartdoc
[core] Better variable name in dartdoc

Fixes #50180

Change-Id: I47157b50b45af7b54eca1013109f90ff1bab6b35
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/263621
Reviewed-by: Lasse Nielsen <80295e4ef244a07779f93eaa95d582bad8e316a5@google.com>
Commit-Queue: Lasse Nielsen <80295e4ef244a07779f93eaa95d582bad8e316a5@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