Description: Use Debian packaged mathjax

Author: Andreas Tille <tille@debian.org>
Forwarded: not-needed

--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -71,6 +71,8 @@ extensions = [
     "nbsphinx",
 ]
 
+mathjax_path="MathJax.js"
+
 exclude_patterns = [
     "**.ipynb_checkpoints",
     # to ensure that include files (partial pages) aren't built, exclude them