See the issue on GitHub - https://github.com/openshift/openshift-docs/issues/37913 

Which section(s) is the issue in?

https://docs.openshift.com/container-platform/4.8/support/gathering-cluster-data.html#gathering-data-specific-features_gathering-cluster-data

What needs fixing?

Please add link to pipelines gather:

registry link:
--image=quay.io/openshift-pipeline/must-gather

Purpose:
Data collection for Red Hat OpenShift Pipelines

source: https://github.com/openshift-pipelines/must-gather

Note that (if applicable), there is both a table for OCP and a table for OKD that the appropriate image should be listed in:

• https://docs.openshift.com/container-platform/4.8/support/gathering-cluster-data.html#gathering-data-specific-features_gathering-cluster-data
• https://docs.okd.io/latest/support/gathering-cluster-data.html#gathering-data-specific-features_gathering-cluster-data