prod-readiness/README: Minor copyedits

Signed-off-by: Stephen Augustus <[email protected]>

Author: justaugustus

keps/prod-readiness/README.md

@@ -1,16 +1,20 @@
 # Production Readiness Reviews
 
-Production readiness reviews are intended to ensure that features merging into
-Kubernetes are observable, scalable and supportable, can be safely operated in
-production environments, and can be disabled or rolled back in the event they
-cause increased failures in production.
+Production readiness reviews (PRRs) are intended to ensure that enhancements
+merging into Kubernetes are observable, scalable and supportable, can be safely
+operated in production environments, and can be disabled or rolled back in the
+event they cause increased failures in production.
 
-Production readiness reviews are done by a separate team, apart from the SIG
-leads (although SIG lead approval is needed as well, of course). It is useful
-to have the viewpoint of a team that is not as familiar with the intimate
-details of the SIG, but is familiar with Kubernetes and with operating
-Kubernetes in production. Experience through our dry runs in 1.17-1.20 have
-shown that this slightly "outsider" view helps identify otherwise missed items.
+While approvals for an enhancement are still required from the respective SIG,
+production readiness reviews are done by the [Production Readiness subproject][prod-readiness] of SIG Architecture.
+
+It is useful to have the viewpoint of a team that is not as familiar with the
+intimate details of the SIG, but is familiar with Kubernetes and with operating
+Kubernetes in production.
+
+Experience through our dry runs in the Kubernetes 1.17 - 1.20 release cycles
+has shown that this slightly "outsider" view helps identify otherwise missed
+items.
 
 Full documentation on the production readiness review process can be found on
 the SIG Architecture page [here][prod-readiness].