fix(charts): remove extra hyphen to make helm linter pass

[cmontemuino]

Pull Request template

Please, go through these steps before you submit a PR.

Why is this PR required? What issue does it fix?:

Template deploy/helm/charts/templates/rbac.yaml is making helm lint to fail.

What this PR does?:

The hyphen at the end of the closing brackets is responsible for chomping all the whitespaces after the brackets. Thus, a previous YAML separator gets into the same line as the apiVersion element from the resource enable by the if statement.

Does this PR require any upgrade changes?:

No.

If the changes in this PR are manually verified, list down the scenarios covered::

cd deploy/helm/charts
helm lint .

Any additional information for your reviewer? : Mention if this PR is part of any design or a continuation of previous PRs

Checklist:

• [x] Fixes #271
• [x] PR Title follows the convention of <type>(<scope>): <subject>
• [ ] Has the change log section been updated?
• [ ] Commit has unit tests
• [ ] Commit has integration tests
• [ ] (Optional) Are upgrade changes included in this PR? If not, mention the issue/PR to track:
• [ ] (Optional) If documentation changes are required, which issue on https://github.com/openebs/openebs-docs is used to track them:

[Abhinandan-Purkait]

Hi @cmontemuino Thanks for the PR. Since your changes would need a helm chart bump we would cherry-pick your commit to a version bump PR.

[Abhinandan-Purkait]

Included in #277