docs: Update documentation and Doxygen documentation generation
diff --git a/model/ndn-interest.h b/model/ndn-interest.h
index 748e2d9..d7ab5df 100644
--- a/model/ndn-interest.h
+++ b/model/ndn-interest.h
@@ -37,8 +37,8 @@
 namespace ndn {
 
 /**
+ * @ingroup ndn
  * @brief NDN Interest (wire formats are defined in wire)
- *
  **/
 class Interest : public SimpleRefCount<Interest>
 {
@@ -266,7 +266,6 @@
 }
 
 /**
- * @ingroup ndn-exceptions
  * @brief Class for Interest parsing exception 
  */
 class InterestException {};