docs: Restructuring docs and adding new section about customizing Content Store and PIT
diff --git a/examples/ndn-congestion-topo-plugin.cc b/examples/ndn-congestion-topo-plugin.cc
index f5e9a5e..f80a816 100644
--- a/examples/ndn-congestion-topo-plugin.cc
+++ b/examples/ndn-congestion-topo-plugin.cc
@@ -51,11 +51,14 @@
   cmd.Parse (argc, argv);
 
   AnnotatedTopologyReader topologyReader ("", 25);
-  topologyReader.SetFileName ("src/ndnSIM/examples/topology/topo-grid-3x3.txt");
+  topologyReader.SetFileName ("src/ndnSIM/examples/topologies/topo-6-node.txt");
   topologyReader.Read ();
 
   // Install CCNx stack on all nodes
   ndn::StackHelper ccnxHelper;
+  ccnxHelper.SetForwardingStrategy ("ns3::ndn::fw::BestRoute");
+  ccnxHelper.SetContentStore ("ns3::ndn::cs::Lru",
+                              "MaxSize", "10000");
   ccnxHelper.InstallAll ();
 
   // Installing global routing interface on all nodes