correcting multicycle test cases and checking on validation

[RobJY]

I think I had errors in the multicycle test cases and this should correct them.
I made this PR to see how these updated tests work with our CI tests.
I'm concerned that the CI tests didn't catch this because the validation does throw an error when run manually, so I'm looking into it.
To be clear, the test suite doesn't catch this when run manually, but if I run the workflow manually outside the test suite the validation we have does throw an error.

PR checklist

• This comment contains a description of changes (with reason).
• Make sure your code lints (nf-core pipelines lint).
• Ensure the test suite passes (nextflow run . -profile test,docker --outdir <OUTDIR>).
• Check for unexpected warnings in debug mode (nextflow run . -profile debug,test,docker --outdir <OUTDIR>).