Update finalizerName javadoc

Author: Soroosh Sarabadani

operator-framework/src/main/java/io/javaoperatorsdk/operator/api/Controller.java

@@ -18,7 +18,7 @@
 
     /**
      * Optional finalizer name, if it is not,
-     * the canonical name of the Controller class will be used as the name of the finalizer.
+     * the crdName will be used as the name of the finalizer too.
      */
     String finalizerName() default NULL;