Fix some dart:io documentation comments.

sdk/lib/io/socket.dart

Index: sdk/lib/io/socket.dart
diff --git a/sdk/lib/io/socket.dart b/sdk/lib/io/socket.dart
index b0c04b474b8510764bbf421087703c8e450bbab1..aa05fdcbf48bb65123d3a59c20f101198ce3cbaa 100644
--- a/sdk/lib/io/socket.dart
+++ b/sdk/lib/io/socket.dart
@@ -200,7 +200,7 @@ abstract class Socket implements Stream<List<int>>,
    * send a close event on the stream and will no longer react on data being
    * piped to it.
    *
-   * Call [close](inherited by [IOSink]) to only close the [Socket]
+   * Call [close](inherited from [IOSink]) to only close the [Socket]
    * for sending data.
    */
   void destroy();