From 09fbabadec897dd28ec7507b43f44d16071361af Mon Sep 17 00:00:00 2001
From: David Rotermund <54365609+davrot@users.noreply.github.com>
Date: Tue, 5 Dec 2023 11:19:54 +0100
Subject: [PATCH] Update README.md

Signed-off-by: David Rotermund <54365609+davrot@users.noreply.github.com>
---
 scipy.signal_butterworth/README.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/scipy.signal_butterworth/README.md b/scipy.signal_butterworth/README.md
index 111708b..e8fde97 100644
--- a/scipy.signal_butterworth/README.md
+++ b/scipy.signal_butterworth/README.md
@@ -1,8 +1,10 @@
 # [scipy.signal](https://docs.scipy.org/doc/scipy/reference/signal.html) -- Butterworth low, high and band-pass
 {:.no_toc}
 
+<nav markdown="1" class="toc-class">
 * TOC
 {:toc}
+</nav>
 
 ## Goal