fix: render Sphinx toctree on docs homepage

Co-authored-by: cclauss <3709715+cclauss@users.noreply.github.com>

Author: Copilot

index.md

@@ -1,6 +1,6 @@
 # TheAlgorithms/Python
 
-```text {toctree}
+```{toctree}
 :maxdepth: 2
 :caption: index.md