Update docs - Setup and Usage (setup.html) for cri-o runtime

[adam-ad]

Describe the bug

According to https://intel.github.io/cri-resource-manager/stable/docs/setup.html#setting-up-cri-resource-manager
setting --image-socket is optional, while from my experience for cri-o it is mandatory
and one needs both --image-socket and --runtime-socket to point to cri-o socket

BTW on socket path, I had issues with "unix:///" prefix (Err: connection error: desc = "transport: error while dialing: dial unix unix:///var/run/crio/crio.sock: connect: no such file or directory")
what worked was a direct path "/var/run/crio/crio.sock" for both --runtime-socket & --image-socket in EnvironmentFile=/etc/sysconfig/cri-resource-manager

Expected behavior

Please update https://github.com/intel/cri-resource-manager/blob/master/docs/setup.md
so that one can follow it without facing issues for crio runtime

To Reproduce

Follow https://intel.github.io/cri-resource-manager/stable/docs/setup.html for cri-o as-is

Environment

OpenShift version 4.10.11
Kubernetes version v1.23.5+9ce5071
OS-IMAGE Red Hat Enterprise Linux CoreOS 410.84.202204112301-0 (Ootpa)
KERNEL-VERSION 4.18.0-305.40.2.el8_4.x86_64
CONTAINER-RUNTIME cri-o://1.23.2-6.rhaos4.10.git9a36bb8.el8