Clarify a CI/CD Reference, hopefully

doc/ci/yaml/README.md

@@ -651,7 +651,7 @@ With `only`, individual keys are logically joined by an AND:
 
 > NOT((any of refs) AND (any of variables) AND (any of changes) AND (if Kubernetes is active))
 
-This, more intuitively, means the keys join by an OR. A functionally equivalent expression:
+This means the keys are treated as if joined by an OR. This relationship could be described as:
 
 > (any of refs) OR (any of variables) OR (any of changes) OR (if Kubernetes is active)