docs: update description of policy.csv example in rbac.md (#10565)
docs: update description of policy.csv example in rbac.md (#10565)

Signed-off-by: Minchao <34f2bd389def52721f8c3862ff64e2d5df4c7913@gmail.com>

Signed-off-by: Minchao <34f2bd389def52721f8c3862ff64e2d5df4c7913@gmail.com>
argoproj/argo-cd,argoproj/argo-cd,argoproj/argo-cd,argoproj/argo-cd,argoproj/argo-cd