Fix helm chart when containerMode.type=dind.

[TingluoHuang]

The chart is not rendered properly when --set containerMode.type=dind

It was rendered to:

     containers:
      - name: runner
        command: [/actions-runner/run.sh]
        image: ghcr.io/actions/actions-runner:latest
        env:
        volumeMounts:
          - name: work
            mountPath: /actions-runner/_work
          - name: dind-cert
            mountPath: /certs/client

Notice the env section is empty due to the bug.

[TingluoHuang]

hide whitespace when reviewing.

TLDR, the bug is {{- end }} get added in the wrong line.