Fixes for documentation.

pkg/analyzer/lib/src/dart/analysis/driver.dart

Index: pkg/analyzer/lib/src/dart/analysis/driver.dart
diff --git a/pkg/analyzer/lib/src/dart/analysis/driver.dart b/pkg/analyzer/lib/src/dart/analysis/driver.dart
index a655e73f6ebca964fd0c9b642074813894239ab8..4fadf703eaf7b2c370a8968c81404c6eda536326 100644
--- a/pkg/analyzer/lib/src/dart/analysis/driver.dart
+++ b/pkg/analyzer/lib/src/dart/analysis/driver.dart
@@ -157,8 +157,8 @@ class AnalysisDriver {
   final _referencingNameTasks = <_FilesReferencingNameTask>[];
 
   /**
-   * The mapping from the files for which index was requested using
-   * [getIndex] to the [Completer] to report the result.
+   * The mapping from the files for which the index was requested using
+   * [getIndex] to the [Completer]s to report the result.
    */
   final _indexRequestedFiles = <String, List<Completer<IndexResult>>>{};