[enterprise-4.8] Issue in file logging/cluster-logging-external.adoc #41971

GitHub issue:

https://github.com/openshift/openshift-docs/issues/41971

Which section(s) is the issue in?

https://docs.openshift.com/container-platform/4.8/logging/cluster-logging-external.html#cluster-logging-collector-log-forward-syslog_cluster-logging-external
Syslog section doesn't have inputs reference, therefore it's not obvious if it can be used with Syslog forwarder.

What needs fixing?

Add input and number reference to YAML example for syslog forwarder.