Fix title in this line of code:

https://github.com/openshift/openshift-docs/blob/enterprise-4.17/observability/logging/logging-6.1/log6x-release-notes-6.1.adoc?plain=1#L4

should be: "Release notes" instead of "Logging 6.1".

Fix title in this line of code:

https://github.com/openshift/openshift-docs/blob/enterprise-4.17/observability/logging/logging-6.1/log6x-about-6.1.adoc?plain=1#L4

should be: "About logging 6.1" instead of "Logging 6.1".

Logging 6.1 is supported in OpenShift versions 4.15, 4.16, 4.17, 4.18 so this task should be done not only for OCP 4.17 documentation