docs: update code-style rule 2.24

This commit also updates existing code to use the new format.

refs #4681

Change-Id: I88e62a34fc55a69cd01d74e80a7000c6cf4d7c2d
diff --git a/src/mgmt/nfd/forwarder-status.hpp b/src/mgmt/nfd/forwarder-status.hpp
index 33dd40a..f222f80 100644
--- a/src/mgmt/nfd/forwarder-status.hpp
+++ b/src/mgmt/nfd/forwarder-status.hpp
@@ -39,11 +39,7 @@
   class Error : public tlv::Error
   {
   public:
-    explicit
-    Error(const std::string& what)
-      : tlv::Error(what)
-    {
-    }
+    using tlv::Error::Error;
   };
 
   ForwarderStatus();