Document URL: https://docs.openshift.com/container-platform/4.8/security/certificates/replacing-default-ingress-certificate.html

Section Number and Name:
1. Replacing the default ingress certificate
1a. Prerequisites

Describe the issue:
The documentation does not mention that the .key and .pem files will need a newline at the end, or else you'll face the issue described in https://access.redhat.com/solutions/5220571

Suggestions for improvement:
Mention that the .pem and .key should have one newline after the "----END CERTIFICATE----" line.

Additional information:
When lacking the newline ending, the authentication clusterOperator will have an issue like "failed to load SNI cert and key: tls: failed to find PEM block", preventing logging into the cluster.