move diagram to match program for consistency

examples/src/SimkitOpenDis7Examples/README.md

@@ -23,7 +23,7 @@ b. SimpleServerOpenDis7:compatibly adds DIS output PDUs
    * [ArrivalProcessOpenDis7.java](ArrivalProcessOpenDis7.java)
    * [SimpleServer.java](SimpleServer.java)
    * [run.SimpleServerOpenDis7.java](run/SimpleServerOpenDis7.java) and [run.RunSimpleServerLog.txt](run/SimpleServerOpenDis7.txt)
-   * [ArrivalProcessDisPdu.png](documentation/ArrivalProcessDisPdu.png)
+   * [ArrivalProcessOpenDis7EventGraphPdu.png](ArrivalProcessOpenDis7EventGraphPdu.png)
 
 c. Two Crane Berths
    * [Ship.java](Ship.java)
@@ -46,4 +46,4 @@ c. Two Crane Berths
 a. Refactor [OpenDis7Examples.ExampleSimulationProgram.java](../OpenDis7Examples/ExampleSimulationProgram.java) to extract re-usable DIS
    network parameters, setup and teardown as a convenient superclass.
 
-b. Add initial PDU outputs to these examples.
+b. Add additional PDU outputs to these examples.