Include port in CA addr list in example

The port is set by the environment.sh script from the previous step but
is overridden in the longer example. Without the port, none of the PVs
are accessible.

Author: tpoliaw

docs/tutorials/launch_example.md

@@ -43,7 +43,7 @@ You can now try out the following commands to interact with the beamline.
 
 ```bash
 # use caget/put locally
-export EPICS_CA_ADDR_LIST=127.0.0.1
+export EPICS_CA_ADDR_LIST=127.0.0.1:5094
 caget BL01T-DI-CAM-01:DET:Acquire_RBV
 
 # OR if you don't have caget/put locally then use one of the containers instead: