Merge pull request #520 from thomasoss/patch-1

Update App.java

decorator/src/main/java/com/iluwatar/decorator/App.java

@@ -25,7 +25,7 @@ package com.iluwatar.decorator;
 /**
  * 
  * The Decorator pattern is a more flexible alternative to subclassing. The Decorator class
- * implements the same interface as the target and uses composition to "decorate" calls to the
+ * implements the same interface as the target and uses aggregation to "decorate" calls to the
  * target. Using the Decorator pattern it is possible to change the behavior of the class during
  * runtime.
  * <p>