Fix moveNext() documentation typo
Fix moveNext() documentation typo

Closes https://github.com/dart-lang/sdk/pull/43406
https://github.com/dart-lang/sdk/pull/43406

GitOrigin-RevId: 2a2b506d94caa1102dc610d749722f91b9eef417
Change-Id: I1bdd57ec626caeab411caba7367567e2b967a848
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/162631
Reviewed-by: Kevin Moore <1d6e7d10d051cf619c5282da3c28fd8d3e0a65a4@google.com>
Commit-Queue: Kevin Moore <1d6e7d10d051cf619c5282da3c28fd8d3e0a65a4@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