Update INSTALL.md

INSTALL.md

@@ -1,8 +1,8 @@
 # Preparing
 
 - [ ] Install and configure Mailsystem (postfix) so it is possible to send mails
-- [ ] apt install python3 python3-pip python3-venv python3-virtualenv
-- [ ] apt install uwsgi uwsgi-plugin-python3
+- [ ] ```apt install python3 python3-pip python3-venv python3-virtualenv```
+- [ ] ```apt install uwsgi uwsgi-plugin-python3```
 - [ ] Install and configure mariadb-server
 - [ ] Install and configure nginx und selfencrypt