Fix comment on ArgListComputer.

pkg/analysis_server/lib/src/services/completion/arglist_computer.dart

Index: pkg/analysis_server/lib/src/services/completion/arglist_computer.dart
diff --git a/pkg/analysis_server/lib/src/services/completion/arglist_computer.dart b/pkg/analysis_server/lib/src/services/completion/arglist_computer.dart
index f52420b0887420c8b5f5e7bb930776b978d5719b..6bb14e13fa13c0f71a52a57f66dfabe0db03b7bf 100644
--- a/pkg/analysis_server/lib/src/services/completion/arglist_computer.dart
+++ b/pkg/analysis_server/lib/src/services/completion/arglist_computer.dart
@@ -15,7 +15,7 @@ import 'package:analyzer/src/generated/scanner.dart';
 
 /**
  * A computer for calculating `completion.getSuggestions` request results
- * for the import combinators show and hide.
+ * when the cursor position is inside the arguments to a method call.
  */
 class ArgListComputer extends DartCompletionComputer {
   _ArgListSuggestionBuilder builder;