Migrate-to-the-new-version.md

@@ -73,16 +73,16 @@ net.addHost('h2')
 net.addHost('h3')
 net.addHost('h4')
 
-net.addLink("h1", "s1", weight=5)
+net.addLink('h1', 's1', weight=5)
 net.setBw('h1', 's1', 20)
 net.setDelay('h1', 's1', 20)
 net.setMaxQueueSize('h1', 's1', 100)
 net.setLoss('h1', 's1', 0.01)
-net.addLink("h2", "s2")
-net.addLink("s1", "s2")
-net.addLink("h3", "s3")
-net.addLink("h4", "s3")
-net.addLink("s1", "s3")
+net.addLink('h2', 's2')
+net.addLink('s1', 's2')
+net.addLink('h3', 's3')
+net.addLink('h4', 's3')
+net.addLink('s1', 's3')
 
 # Assignment strategy
 net.mixed()