Added link to previous operator docs (quay#96)

Author: BillDett

deploy_quay_on_openshift_op_tng/master.adoc

@@ -10,6 +10,9 @@ The Quay Operator provides a simple method to deploy and manage a {productname}
 This is the preferred procedure for deploying {productname} on OpenShift and is covered in this guide.
 
 Note that this version of the Quay Operator has been completely rewritten and differs substantially from earlier versions.  Please review this documentation carefully.
+ifeval::["{productname}" == "Project Quay"]
+If you are looking for documentation for prior versions of the Quay Operator, please xref:deploy_quay_on_openshift_op.adoc[check here.]
+endif::[]
 
 include::modules/con_quay_intro.adoc[leveloffset=+1]