security: Add doxygen comments

Change-Id: Ieafe4d13513e626d84ef9e621694f69844785018
diff --git a/src/security/sec-public-info-sqlite3.hpp b/src/security/sec-public-info-sqlite3.hpp
index 94dc0fa..2cecb04 100644
--- a/src/security/sec-public-info-sqlite3.hpp
+++ b/src/security/sec-public-info-sqlite3.hpp
@@ -6,16 +6,15 @@
  * See COPYING for copyright and distribution information.
  */
 
-#ifndef NDN_SEC_PUBLIC_INFO_SQLITE3_HPP
-#define NDN_SEC_PUBLIC_INFO_SQLITE3_HPP
+#ifndef NDN_SECURITY_SEC_PUBLIC_INFO_SQLITE3_HPP
+#define NDN_SECURITY_SEC_PUBLIC_INFO_SQLITE3_HPP
 
 #include "../common.hpp"
 #include "sec-public-info.hpp"
 
 struct sqlite3;
 
-namespace ndn
-{
+namespace ndn {
   
 /**
  * BasicIdentityStorage extends IdentityStorage to implement a basic storage of identity, public keys and certificates
@@ -234,6 +233,6 @@
   updateKeyStatus(keyName, false);
 }
 
-}
+} // namespace ndn
 
-#endif
+#endif //NDN_SECURITY_SEC_PUBLIC_INFO_SQLITE3_HPP