🐛 fix typos in release instruction for hotfix staging

[mrnicegyu11]

There are typos in the release instructions doc that prevented the hotfix-staging-release github action from running through. An underscore is missing.

Compare with osparc-simcore/.github/workflows/ci-staging.yml:58ff:

- if: contains(env.BRANCH_NAME, 'remotes/origin/hotfix_staging_')
        env:
          FROM_TAG_PREFIX: hotfix-staging-github
        name: deploy from hotfix staging to staging
        run: ./ci/deploy/dockerhub-tag-version.bash

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

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0.0% Duplication

[sanderegg]

@mrnicegyu11 : I guess you do not have zenhub installed. I can show you how that works since this allows to link the issues to the maintenance case epic, which simplifies a lot managing all these issues as well as reporting.

[mrnicegyu11]

@sanderegg yep don't have it yet, let's do it :)

[odeimaiz]

👍