Adds URL to recording of multi-lateral

Author: dbosk

multi-lateral/README.md

@@ -1,4 +1,4 @@
-[Multi-Lateral Security] introduces the idea of compartmentalization. It 
-illustrates the concept with the Lattice Model and the Chinese Wall Model. 
-Finally, it mentions Qubes OS as an example operating system which implements 
-strict compartmentalization.
+[Multi-Lateral Security](https://youtu.be/TG-MgsW7GAU) introduces the idea of 
+compartmentalization. It illustrates the concept with the Lattice Model and the 
+Chinese Wall Model. Finally, it mentions Qubes OS as an example operating 
+system which implements strict compartmentalization.

multi-lateral/contents.tex

@@ -35,7 +35,7 @@ \subsection{The Lattice model}
   \end{idea}
 \end{frame}
 
-\begin{frame}{\insertsubsectionhead}
+\begin{frame}
   \begin{figure}
     \includegraphics[height=0.6\textheight]{lattice.png}
     \caption{The Lattice Model, turns BLP from an ordered set into a partially