refactor(preview-script): fix typo in `ignore-errors`

[tbouffard]

Use plural for consistency with other options. This option is not supposed to be used outside of this repository. The shared GitHub Actions provide a dedicated input which must be used instead of the script option. So, this change won't have side effects in workflow of the documentation content repositories.

[github-actions[bot]]

:recycle: PR Preview 8c972c3d2d69372db818ae76dde148e94a42d644 has been successfully destroyed since this PR has been closed.

_{🤖 By surge-preview}

[github-actions[bot]]

:recycle: PR Preview 8c972c3d2d69372db818ae76dde148e94a42d644 has been successfully destroyed since this PR has been closed.

_{🤖 By surge-preview}

[sonarcloud[bot]]

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