Created attachment 142759 [details]
Example of wrong rendering and expected rendering

SUMMARY
The markdown for fence-block-code is not rendered correctly

STEPS TO REPRODUCE
1. write the following code in a demo.md document
* per OGNI sito in cui si vuole https spostare la parte di definizione nel vhost:443 e mettere nel vhost:80
```
<VirtualHost *:80>
        ServerName **SERVERNAME**
        <IfModule mod_rewrite.c>
                RewriteEngine on
                RewriteCond %{REQUEST_URI} !^/.well-known/acme-challenge/.*
                RewriteRule ^/?(.*) https://**SERVERNAME**/$1 [L,R,NE]
        </IfModule>
        <IfModule !mod_rewrite.c>
                Redirect permanent / https://**SERVERNAME**/
        </IfModule>

</VirtualHost>
```
2. Open the document in okular (repo package from kubuntu 20.04)

OBSERVED RESULT
The block is rendered as an inline string (top of the attached image)

EXPECTED RESULT
The block should be rendered as a code block (bottom of the attached image)

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Kubuntu 20.04 vanilla
(available in About System)
KDE Plasma Version: 5.18.5
KDE Frameworks Version: 5.68.0
Qt Version: 5.12.8

ADDITIONAL INFORMATION
Okular Backend Markdown version 0.1.0 by Julian Wolff
Kernel: 5.11.0-38-generic 64bit
Processor: 12xcore i7-10750H CPU @ 2.6 GHz
RAM: 31.1 GiB