Fixing demo 1 pidof typo

evaluation/demonstration/demo1_simple_middlebox/run_demo.sh

 
     echo "Starting Middlebox"
     ../middlebox 8423 127.0.0.1:8423 simpleMiddlebox &
-    mboxpid=$(pidof ../mcmbox)
+    mboxpid=$(pidof middlebox)
 
     sleep .3
 
     echo "Starting Server"
     ../server ./simpleEchoScript.sh &
-    serverpid=$(pidof ../mcserver)
+    serverpid=$(pidof server)
 
     sleep .3