model: Initial attempt to optimize Interest/Data encoding/decoding via a custom packet format
diff --git a/docs/source/intro.rst b/docs/source/intro.rst
index 4a7252a..40bf4fd 100644
--- a/docs/source/intro.rst
+++ b/docs/source/intro.rst
@@ -5,7 +5,7 @@
.. :maxdepth: 2
Introduction
-==============
+============
The ndnSIM is NS-3 module that implements Named Data Networking (NDN) communication model, the clean slate Internet design. ndnSIM is specially optimized for simulation purposes and has a cleaner and more extensible internal structure comparing to the existing NDN implementation (Project CCNx).