Correct documentation link address in README
Correct documentation link address in README

Correct documentation link address in README.

Change-Id: I1f6ac13eebf05e5deb7fe07ae7a202e1dd4e544a

clayg/swift,swiftstack/swift,smerritt/swift,smerritt/swift,smerritt/swift,openstack/swift,clayg/swift,matthewoliver/swift,psachin/swift,tipabu/swift,nadeemsyed/swift,openstack/swift,psachin/swift,nadeemsyed/swift,matthewoliver/swift,clayg/swift,clayg/swift,psachin/swift,smerritt/swift,swiftstack/swift,tipabu/swift,nadeemsyed/swift,openstack/swift,matthewoliver/swift,nadeemsyed/swift,tipabu/swift,swiftstack/swift,tipabu/swift,psachin/swift,openstack/swift,matthewoliver/swift