Add example for minimal build-manifest deployment without Prometheus for Kind

[mrrr3d]

Which document would you like to address?

deploying-kepler-on-a-local-kind-cluster

What is the issue?

The current documentation for deploying Kepler using make build-manifest on Kind only provides an example with Prometheus enabled:

make build-manifest OPTS="PROMETHEUS_DEPLOY"
kubectl apply -f _output/generated-manifest/deployment.yaml

This forces users into a full monitoring stack, even when they only need basic exporter functionality without Prometheus.

How do you suggest this is fixed?

Add a "Minimal deployment (no Prometheus)" section under the “Deploying Kepler on Kind”.

git clone --depth 1 https://github.com/sustainable-computing-io/kepler.git
cd kepler
make build-manifest OPTS=""
kubectl apply -f _output/generated-manifest/deployment.yaml

Clarify that omitting PROMETHEUS_DEPLOY fully skips ServiceMonitor/RBAC/etc.

Thank you for considering this enhancement!