Update DMRScan_vignette.Rmd YAML to not use leading spaces

[martin-g]

YAML is space sensitive and this was leading to the following error:

* creating vignettes ... ERROR
--- re-building ‘DMRScan_vignette.Rmd’ using rmarkdown
YAML parse exception at line 10, column 0:
did not find expected <document start>
Error: processing vignette 'DMRScan_vignette.Rmd' failed with diagnostics:
pandoc document conversion failed with error 64
--- failed re-building ‘DMRScan_vignette.Rmd’

I am not sure why the error happens only on the Linux aarch64 builder.

[martin-g]

Friendly ping!

[hpages]

I am not sure why the error happens only on the Linux aarch64 builder.

Pandoc seems to be involved. Could this be because the various Bioconductor build machines use different versions of Pandoc?

@christpa It would be greatly appreciated if you could take a look at this PR. Please be aware that Bioconductor will deprecate unmaintained packages. Don't hesitate to let me know or ask on the bioc-devel mailling list if you have any questions or concerns about this. Thanks!

[martin-g]

Pandoc seems to be involved. Could this be because the various Bioconductor build machines use different versions of Pandoc?

Yes! This might be the reason!
All build nodes but kunpeng2 use Pandoc 2.7.3, while kunpeng2 uses Pandoc 3.1.2!

[martin-g]

https://bioconductor.org/checkResults/3.18/bioc-LATEST/DMRScan/ is green on Linux ARM64 too!
The builder now uses Pandoc 2.12 (the earliest version with support for Linux ARM64).

I'll leave this PR open. Hopefully it will be merged and Pandoc 3.x will be supported too!

[hpages]

Thanks @martin-g

@christpa Any chance you can merge this? Thanks

[hpages]

Thanks @christpa. Please don't forget to push the changes to git.bioconductor.org. Thanks again!