Merge pull request #36072 from SNiemann15/ibm_Z_perf

IBM Z Performance Recommendations - update attribute for rhel first

Author: mikemckiernan

scalability_and_performance/ibm-z-recommended-host-practices.adoc

@@ -14,7 +14,7 @@ The s390x architecture is unique in many aspects. Therefore, some recommendation
 
 [NOTE]
 ====
-Unless stated otherwise, these practices apply to both z/VM and {op-system-base-first} KVM installations on IBM Z and LinuxONE.
+Unless stated otherwise, these practices apply to both z/VM and {op-system-base-full} KVM installations on IBM Z and LinuxONE.
 ====
 
 include::modules/ibm-z-managing-cpu-overcommitment.adoc[leveloffset=+1]