ROX-13092: fix eventrouter rbac template

[rhybrillou]

Description

There was a typo in the RBAC part of the eventrouter templates. This PR fixes the fields.

Checklist (Definition of Done)

- [ ] Unit and integration tests added
- [ ] Added test description under Test manual
- [ ] Documentation added if necessary (i.e. changes to dev setup, test execution, ...)

• CI and all relevant tests are passing
• Add the ticket number to the PR title if available, i.e. ROX-12345: ...
  - [ ] Discussed security and business related topics privately. Will move any security and business related topics that arise to private communication channel.

Test manual

# To run tests locally run:
make db/teardown db/setup db/migrate
make ocm/setup OCM_OFFLINE_TOKEN=<ocm-offline-token> OCM_ENV=development
make verify lint binary test test/integration

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[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: rhybrillou, stehessel
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[openshift-ci]

New changes are detected. LGTM label has been removed.