mgmt: ForwarderStatus equality operators and formatted output

Change-Id: I6d814ef427a9db38ef46427888f3b3ba982bf641
Refs: #3903
diff --git a/src/mgmt/nfd/channel-status.hpp b/src/mgmt/nfd/channel-status.hpp
index 16eb419..04b3ed6 100644
--- a/src/mgmt/nfd/channel-status.hpp
+++ b/src/mgmt/nfd/channel-status.hpp
@@ -28,9 +28,9 @@
 namespace nfd {
 
 /**
- * @ingroup management
- * @brief represents NFD Channel Status dataset
- * @sa http://redmine.named-data.net/projects/nfd/wiki/FaceMgmt#Channel-Dataset
+ * \ingroup management
+ * \brief represents an item in NFD Channel dataset
+ * \sa https://redmine.named-data.net/projects/nfd/wiki/FaceMgmt#Channel-Dataset
  */
 class ChannelStatus
 {
@@ -86,7 +86,7 @@
 }
 
 std::ostream&
-operator<<(std::ostream& os, const ChannelStatus& cs);
+operator<<(std::ostream& os, const ChannelStatus& status);
 
 } // namespace nfd
 } // namespace ndn