Minor update to testing procedure

test/streaming/manual.md

@@ -40,9 +40,9 @@ The following command brings up the services
 
 ### Run the automated test
 
-To run the load test using the following command
+To run the load test using the following command (here, the last parameter '15' refers to the number of VLC player clients to be launched):
 
-`vagrant --infra=streaming ssh loadtest-streaming -- "/vagrant/test/streaming/run.sh"`
+`vagrant --infra=streaming ssh loadtest-streaming -- "/vagrant/test/streaming/run.sh /home/ubuntu/test/streaming http://192.168.50.11/test_video/stream.mpd 15`
 
 This test currently just generates the load and does not have any assertions. It breaks at 1000.