Change swift-initial-rings URL

Change-Id: I7b3705e8bba67649bfbf0950d1724d711c57e042

doc/swift-guide.rst

@@ -127,7 +127,7 @@ Similar commands can be used for **multinode**, you will just need to run the
 **add** step for each IP in the cluster.
 
 For more info, see
-http://docs.openstack.org/kilo/install-guide/install/apt/content/swift-initial-rings.html
+https://docs.openstack.org/project-install-guide/object-storage/ocata/initial-rings.html
 
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