docs: Update documentation and Doxygen documentation generation
diff --git a/apps/ndn-consumer.h b/apps/ndn-consumer.h
index bb9e30a..baa6ba3 100644
--- a/apps/ndn-consumer.h
+++ b/apps/ndn-consumer.h
@@ -41,7 +41,7 @@
 namespace ndn {
 
 /**
- * @ingroup ndn
+ * @ingroup ndn-apps
  * \brief NDN application for sending out Interest packets
  */
 class Consumer: public App