shortcodes: allow markdown for title and content

[cagix]

Using a button shortcode with markdown content results in a correctly translated but somehow escaped format.

Example: When I use {{% button %}}Get **Hugo** {{% /button %}}, the result currently is

<span class="btn cstyle transparent">
  <button type="button">
    Get &lt;strong&gt;Hugo&lt;/strong&gt;
  </button>
</span>

Expected would be

<span class="btn cstyle transparent">
  <button type="button">
    Get <strong>Hugo</strong>
  </button>
</span>

This worked in an earlier version of Hugo Relearn theme.

Version: Hugo Relearn 5.12.2, Hugo v0.111.2

[McShelby]

Thankg cagix for reporting this. It's fixed in 5.12.3

[cagix]

thx!