1111228 - Removed jdob from the event listener sample return

https://bugzilla.redhat.com/show_bug.cgi?id=1111228

The second typo referenced in the BZ is fixed in https://github.com/pulp/pulp/pull/1090
I changed to to match the sample request in the 'Create Event Listener' section. Perhaps they should both change, but since the url is dependant on what configuration is used during creation, I just made them match.