Storage Tier name has been changed

[kmadhushree]

Hi Team

The tier flex has been renamed to smart - please review the references for flex in the documents below- https://cloud.ibm.com/docs/openshift?topic=openshift-storage_cos_install

[kmadhushree]

Also, in IKS documents as well- https://cloud.ibm.com/docs/containers?topic=containers-storage_cos_install

[derekpoindexter]

Thanks for the feedback. I've updated these pages. The changes will be live soon