Fix documentation in dart:io.

pkg/scheduled_test/lib/scheduled_process.dart

Index: pkg/scheduled_test/lib/scheduled_process.dart
diff --git a/pkg/scheduled_test/lib/scheduled_process.dart b/pkg/scheduled_test/lib/scheduled_process.dart
index 46bb5b67c8fc5f268302cff203a2c9d50c7a7d66..c99cf06ddf6729877564a6f6970418924eea3771 100644
--- a/pkg/scheduled_test/lib/scheduled_process.dart
+++ b/pkg/scheduled_test/lib/scheduled_process.dart
@@ -185,8 +185,8 @@ class ScheduledProcess {
     });
   }
 
-  /// Converts a stream of bytes to a stream of lines and returns that along
-  /// with a [StreamCanceller] controlling it.
+  /// Converts a stream of byte lists to a stream of lines and returns that
+  /// along with a [StreamCanceller] controlling it.
   Pair<Stream<String>, StreamCanceller> _lineStreamWithCanceller(
       Future<Stream<List<int>>> streamFuture) {
     return streamWithCanceller(futureStream(streamFuture)