Replace Maps library tour link in Storage template with current URL.

tools/dom/templates/html/impl/impl_Storage.darttemplate

Index: tools/dom/templates/html/impl/impl_Storage.darttemplate
diff --git a/tools/dom/templates/html/impl/impl_Storage.darttemplate b/tools/dom/templates/html/impl/impl_Storage.darttemplate
index 609355e29c04695e98c487a9efedffeb4d97db78..b3c3ac97913409e97a250afe4368dcdb3cc96a1c 100644
--- a/tools/dom/templates/html/impl/impl_Storage.darttemplate
+++ b/tools/dom/templates/html/impl/impl_Storage.darttemplate
@@ -26,7 +26,7 @@ part of $LIBRARYNAME;
  * For more examples of using this API, see
  * [localstorage_test.dart](http://code.google.com/p/dart/source/browse/branches/bleeding_edge/dart/tests/html/localstorage_test.dart).
  * For details on using the Map API, see the
- * [Maps](http://www.dartlang.org/docs/library-tour/#maps-aka-dictionaries-or-hashes)
+ * [Maps](https://www.dartlang.org/guides/libraries/library-tour#maps)
  * section of the library tour.
  */
 $(ANNOTATIONS)$(NATIVESPEC)$(CLASS_MODIFIERS)class $CLASSNAME$EXTENDS