Add the rest of university notes

docs/lectures/acn/05_DTN_advanced_protocols.md

@@ -10,7 +10,7 @@
 * **The focus phase allows** each node to forward a copy of its messages to other potential nodes until the messages gets to its destination.
 * The protocol uses a single-copy utility based routing scheme to forward a copy of the message further.
 * Forwarding decisions are made based on **timers** which record the times nodes come in communication range of each other.
-* Node $$A$$ forwards message with destination $$D$$ to node $$B$$ , **if and only if** $$B$$ has a higher potential of delivering the message to $$D$$.
+* Node $A$ forwards message with destination $D$ to node $B$ , **if and only if** $B$ has a higher potential of delivering the message to $D$.
 
 #### SimBet