Update PRR KEP link in KEP template (kubernetes#2018)

* Update PRR KEP link in KEP template

* Apply suggestions from code review

* Apply suggestions from code review

Co-authored-by: Stephen Augustus <[email protected]>

Author: verb

keps/NNNN-kep-template/README.md

@@ -360,7 +360,7 @@ 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. See more in the PRR KEP at
-https://git.k8s.io/enhancements/keps/sig-architecture/20190731-production-readiness-review-process.md.
+https://git.k8s.io/enhancements/keps/sig-architecture/1194-prod-readiness/README.md.
 
 The production readiness review questionnaire must be completed and approved
 for the KEP to move to `implementable` status and be included in the release.