Error 404 for ChIP-seq assets/blacklists

[FelixKrueger]

Describe the bug
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The page https://nf-co.re/chipseq/assets/blacklists gives only a 404 error

To Reproduce
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1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
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• Version [e.g. 22]

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