fix(dracut.sh): shellcheck warning SC1004

[pvalena]

As stated in [1] it should work without literal backslash+linefeed.

[1] https://github.com/koalaman/shellcheck/issues/1246

Changes

Shellcheck warning should be mitigated.

Checklist

• [ ] I have tested it locally
• [ ] I have reviewed and updated any documentation if relevant
• [ ] I am providing new code and test(s) for it