add more sites and correct sidebars

sidebars.js

@@ -4,7 +4,7 @@ module.exports = {
             ALLGEMEINES: ['home', 'prepaid', 'elterninformation'],
         },
         {
-            EXTRAS: [ 'extras/extra-preisliste' ],
+            EXTRAS: [ 'extras/extra-preisliste', 'extras/debian-discord-bot-setup' ],
         },
         {
             type: 'category',
@@ -101,7 +101,9 @@ module.exports = {
                 'software-installation/debian-chrome-installieren',
                 'software-installation/debian-cockpit-installieren',
                 'software-installation/debian-cronjobs-einstellen',
+                'software-installation/debian-nodejs-installieren',
                 'software-installation/debian-docker-installieren',
+                'software-installation/debian-python-installieren',
                 'software-installation/debian-fail2ban-installieren',
                 'software-installation/debian-java-8-installieren',
                 'software-installation/debian-mariadb-installieren',

wiki/software-installation/debian-nodejs-installieren.md

@@ -1,6 +1,6 @@
 ---
 id: debian-nodejs-installieren
-title: Node JS installieren (Debian based distros)
+title: Node JS installieren (Debian)
 sidebar_label: Node JS installieren
 ---
 Installation von Node JS auf Linux Debian Server

wiki/software-installation/debian-python3-installieren.md

@@ -1,6 +1,6 @@
 ---
 id: debian-python-installieren
-title: Python installieren (Debian based distros)
+title: Python installieren (Debian)
 sidebar_label: Python installieren
 ---
 Installation von Python auf Linux Debian Server