Fix spans in _accessor_setter template
Fix spans in _accessor_setter template

srawlins/dartdoc,srawlins/dartdoc,keertip/dartdoc,dart-lang/dartdoc,keertip/dartdoc,astashov/dartdoc,dart-lang/dartdoc,keertip/dartdoc,srawlins/dartdoc,dart-lang/dartdoc,astashov/dartdoc,srawlins/dartdoc,astashov/dartdoc,keertip/dartdoc,astashov/dartdoc,dart-lang/dartdoc