minor project description change

Author: reflechant

project.clj

@@ -1,5 +1,5 @@
 (defproject json-diff "0.2.0"
-  :description "A console program to produce colorized diff of two JSON files"
+  :description "A console program to produce colorized structural diff of two JSON files"
   :url "https://github.com/reflechant/json-diff"
   :license {:name "EPL-2.0 OR GPL-2.0-or-later WITH Classpath-exception-2.0"
             :url "https://www.eclipse.org/legal/epl-2.0/"}