added hint to pandoc dep and formats in Config.groovy

[ghp-dev]

All Submissions:

• Does your PR affect the documentation?
• If yes, did you update the documentation or create an issue for updating it?

Once again, the current docs is technically correct: the necessary info (pandoc, docx format) is there, but very easy to overlook.

Change to Documentation:

• Did you build the docs and copy them to the /docs folder?
• If not, did you create an issue for doing so?

[rdmueller]

cool. btw: have you seen the pandoc plugin?

it still needs some testing and the publishing of the final binary. but it will resolve the pandoc dependency automatically...