security: Add SignatureSha256

Change-Id: Id9a61f898d12a6b289a24adb594471b26d3513d6
diff --git a/src/security/certificate.cpp b/src/security/certificate.cpp
index f0dfdf2..0312fd5 100644
--- a/src/security/certificate.cpp
+++ b/src/security/certificate.cpp
@@ -19,7 +19,7 @@
 
 #include "../encoding/cryptopp/asn_ext.hpp"
 
-INIT_LOGGER("ndn.security.Certificate");
+INIT_LOGGER("ndn.Certificate");
 
 using namespace std;