Fix the example webhook middleware
Fix the example webhook middleware

Change-Id: I242dc8bc655a1d1243c2d4bd51fc62e4dcadc67b

tipabu/swift,tipabu/swift,swiftstack/swift,openstack/swift,openstack/swift,openstack/swift,swiftstack/swift,tipabu/swift,openstack/swift,swiftstack/swift,tipabu/swift