Bug 2102393: Possible typo in OpenShift GitOps documentation

The Senior Technical Writer rhn-support-shdiaz has warned us of a possible error in the documentation for creating/configuring applications in OpenShift GitOps, as it is documented in this Bugzilla

The two instructions that we need to check are, respectively:

1. In step Creaating an application by using the oc tool, the manifest name in

   oc create -f openshift-gitops-getting-started/argo/cluster.yaml
   

1. In step Creating an application by using the oc tool, the manifest name in

   oc create -f openshift-gitops-getting-started/argo/app.yaml
   

To ensure the correctness of the mentioned documents, I will implement both from scratch in a real cluster, so I can confirm to Shauna which are the changes that must be taken, if any.