TELCODOCS-1990: Docfooding feedback openshift#1 applied

Author: Padraig O'Grady

modules/cnf-performing-end-to-end-tests-running-the-tests.adoc

@@ -13,6 +13,11 @@ Run the cluster latency tests to validate node tuning for your Cloud-native Netw
 When executing `podman` commands as a non-root or non-privileged user, mounting paths can fail with `permission denied` errors. To make the `podman` command work, append `:Z` to the volumes creation; for example, `-v $(pwd)/:/kubeconfig:Z`. This allows `podman` to do the proper SELinux relabeling.
 ====
 
+.Prerequisites
+
+* You have logged in to `registry.redhat.io` with your Customer Portal credentials.
+
+
 .Procedure
 
 . Open a shell prompt in the directory containing the `kubeconfig` file.
@@ -30,7 +35,7 @@ registry.redhat.io/openshift4/cnf-tests-rhel8:v{product-version} /usr/bin/test-r
 --ginkgo.v --ginkgo.timeout="24h"
 ----
 
-. Optional: Append `--ginkgo.dryRun` flag to run the latency tests in dry-run mode. This is useful for checking what commands the tests run.
+. Optional: Append `--ginkgo.dry-run` flag to run the latency tests in dry-run mode. This is useful for checking what commands the tests run.
 
 . Optional: Append `--ginkgo.v` flag to run the tests with increased verbosity.