Revert "Fix formatting of Markdown code blocks"

This reverts commit 956175d.

Author: pquentin

docs/sphinx/_static/css/custom.css

@@ -45,16 +45,6 @@
 
 html_theme = "sphinx_rtd_theme"
 
-# These folders are copied to the documentation's HTML output
-html_static_path = ["_static"]
-
-# These paths are either relative to html_static_path
-# or fully qualified paths (eg. https://...)
-html_css_files = [
-    "css/custom.css",
-]
-
-
 intersphinx_mapping = {
     "python": ("https://docs.python.org/3", None),
     "elastic-transport": (