OSDOCS-8515: Documented the 4.15 Welcome page

Author: dfitzmau

_attributes/common-attributes.adoc

@@ -252,7 +252,7 @@ endif::[]
 :vmw-full: VMware vSphere
 :vmw-short: vSphere
 //Oracle
-:oci-first: Oracle(R) Cloud Infrastructure
+:oci-first: Oracle(R) Cloud Infrastructure (OCI)
 :oci: OCI
 :ocvs-first: Oracle(R) Cloud VMware Solution (OCVS)
 :ocvs: OCVS