copyright.html: process .Site.Copyright as HTML

[chalin]

• Fixes Assume .Site.Copyright is HTML for backwards compatibility #1953
• Tested with @yann-soubeyrand's:

  copyright: |
    Copyright Camptocamp SA
    <p xmlns:cc="http://creativecommons.org/ns#" xmlns:dct="http://purl.org/dc/terms/"><span property="dct:title">Content</span> is licensed under <a href="http://creativecommons.org/licenses/by-sa/4.0/?ref=chooser-v1" target="_blank" rel="license noopener noreferrer" style="display:inline-block;">CC BY-SA 4.0<img style="height:22px!important;margin-left:3px;vertical-align:text-bottom;" src="https://mirrors.creativecommons.org/presskit/icons/cc.svg?ref=chooser-v1"><img style="height:22px!important;margin-left:3px;vertical-align:text-bottom;" src="https://mirrors.creativecommons.org/presskit/icons/by.svg?ref=chooser-v1"><img style="height:22px!important;margin-left:3px;vertical-align:text-bottom;" src="https://mirrors.creativecommons.org/presskit/icons/sa.svg?ref=chooser-v1"></a></p>

  Yielding:

  

• Preview: https://deploy-preview-1954--docsydocs.netlify.app/community/

[deining]

LGTM

[chalin]

Thanks for the review @deining. I'm going to merge now. @yann-soubeyrand - your feedback is still welcome.

[yann-soubeyrand]

Hi @chalin, thanks for the follow-up. It seems OK to me too. As I said, I found a way to pass raw HTML using AsciiDoc, but I didn’t research if there was a way to do the same for Markdown. So, reverting to raw HTML here will ensure it works for both cases.