Switch .md emphasis style to asterisks

As pdoc is using the "code-friendly" markdown syntax, using underscores
will not render properly. This pragma tells markdownlint to use
asterisks instead.

References:

https://pdoc.dev/docs/pdoc.html#markdown-support
https://github.com/trentm/python-markdown2/wiki/code-friendly

Refers to imcf#34

Author: ehrenfeu

CHANGELOG.md

@@ -1,6 +1,7 @@
 # Changelog 🧾
 
 <!-- markdownlint-disable MD024 (no-duplicate-header) -->
+<!-- markdownlint-configure-file { "emphasis-style": { "style": "asterisk" } } -->
 
 ## 1.5.0