Fix bad addressttl parameter record in migration table

The second ttl is addressttl and is not configurable at this time

Author: jajik

docs/src/main/asciidoc/migration.adoc

@@ -85,7 +85,7 @@ only the balancers and the workers definitions are slightly different.
 | route | JVMRoute | In fact JBossWEB via the JVMRoute in the Engine will add it
 | status | - | mod_cluster has a finer status handling: by context via the ENABLE/STOP/DISABLE/REMOVE application messages. hot-standby is done by lbfactor = 0 and Error by lbfactor = 1 both values are sent in STATUS message by the ClusterListener
 | timeout | nodeTimeout | Default wait forever (http://httpd.apache.org/docs/2.4/mod/mod_proxy.html[http://httpd.apache.org/docs/2.4/mod/mod_proxy.html] is wrong there)
-| ttl | ttl | Default 60 seconds
+| addressttl | - | Default 60 seconds
 |===
 
 === Balancers