docs: Update documentation and Doxygen documentation generation
diff --git a/utils/ndn-limits.h b/utils/ndn-limits.h
index d1daa10..d8f848b 100644
--- a/utils/ndn-limits.h
+++ b/utils/ndn-limits.h
@@ -29,7 +29,7 @@
 namespace ndn {
 
 /**
- * \ingroup ndn
+ * \ingroup ndn-fw
  * \brief Abstract class to manage Interest limits 
  */
 class Limits :