fixed error message

git-svn-id: https://src.springframework.org/svn/spring-framework/trunk@2971 50f2f4bb-b051-0410-bef5-90022cba6387

org.springframework.web.servlet/src/main/java/org/springframework/web/servlet/view/tiles2/TilesConfigurer.java

@@ -178,7 +178,7 @@ public class TilesConfigurer implements ServletContextAware, InitializingBean, D
 				this.tilesInitializer = (TilesInitializer) clazz.newInstance();
 			}
 			catch (Exception ex) {
-				throw new IllegalStateException("Tiles 2.2 not available", ex);
+				throw new IllegalStateException("Tiles-Extras 2.2 not available", ex);
 			}
 		}
 		else {