Fix deployment logic in the workflow

[t00sa]

The documentation does not currently deploy unless the workflow is triggered with a manual dispatch event. The logic for the deployment step is:

if: ${{ github.repository == 'jules-lsm/jules-lsm.github.io'
        && github.ref == 'refs/heads/master'
        && (github.event_name == 'push'
            || github.event_name == 'workflow_dispatch') }}

This should also trigger for a release event.