docs: wrote Doxygen comments for all files

refs: #4118

Change-Id: Ib0e7f1926cdabcca5aa401b59b24519412a099f7
diff --git a/src/route/routing-table-entry.hpp b/src/route/routing-table-entry.hpp
index b553fa1..6e01c45 100644
--- a/src/route/routing-table-entry.hpp
+++ b/src/route/routing-table-entry.hpp
@@ -17,15 +17,15 @@
  * You should have received a copy of the GNU General Public License along with
  * NLSR, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
  *
- * \author A K M Mahmudul Hoque <ahoque1@memphis.edu>
- *
  **/
+
 #ifndef NLSR_ROUTING_TABLE_ENTRY_HPP
 #define NLSR_ROUTING_TABLE_ENTRY_HPP
 
+#include "nexthop-list.hpp"
+
 #include <iostream>
 #include <ndn-cxx/name.hpp>
-#include "nexthop-list.hpp"
 
 namespace nlsr {