fix tmux

docs.it4i/general/accessing-the-clusters/tmux.md

@@ -7,27 +7,20 @@ Tmux is installed on Karolina's login nodes.
 Note that [GNU Screen][2] is not supported, but if you prefer it, you can install it in your `/home` folder:
 
 ```console
-#!/bin/bash
-
-# download source code
 wget https://ftp.gnu.org/gnu/screen/screen-4.9.0.tar.gz
 tar xf screen-4.9.0.tar.gz && rm screen-4.9.0.tar.gz
 cd screen-4.9.0
 
-# install screen
 ./autogen.sh
 ./configure --prefix=$HOME/.local/screen
 make
 make install
 
-# copy over default etc
 mkdir $HOME/.local/screen/etc
 cp etc/etcscreenrc $HOME/.local/screen/etc/screenrc
 
-# set up path
 echo "export PATH=\$HOME/.local/screen/bin:\$PATH" >> $HOME/.bashrc
 
-# clean up
 cd ../ && rm -rf screen-4.9.0
 ```