docs: argocd-cmd-params-cm yaml correction

[lf32]

This is an update to docs by adding exponential backoff timeout.
Correction to controller.self.heal.backoff.timeout.seconds
Fixes #21021

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[crenshaw-dev]

It looks like both of these settings exist. I'm not sure how they differ.

        - name: ARGOCD_APPLICATION_CONTROLLER_SELF_HEAL_TIMEOUT_SECONDS
          valueFrom:
            configMapKeyRef:
              name: argocd-cmd-params-cm
              key: controller.self.heal.timeout.seconds
              optional: true
        - name: ARGOCD_APPLICATION_CONTROLLER_SELF_HEAL_BACKOFF_TIMEOUT_SECONDS
          valueFrom:
            configMapKeyRef:
              name: argocd-cmd-params-cm
              key: controller.self.heal.backoff.timeout.seconds
              optional: true

[todaywasawesome]

I would assume timeout is how long before a request times out and the backoff is how long it will wait before trying again?

[reggie-k]

As far as I understand from https://github.com/argoproj/argo-cd/blob/master/controller/appcontroller.go#L2137,
if selfHealBackOff is not configured, then the selfHealTimeout is used.
So both fields are relevant.
Maybe it is worth to highlight that in the documentation though.

[nitishfy]

Please go through @reggie-k comment to document it otherwise LGTM

[revitalbarletz]

Is there a way to test this?