[README.md]: update

README.md

@@ -37,23 +37,33 @@ This repository saves the custom configuration used by heckyel in i3wm
 
 ### Base i3wm
 
-    pacman -Syy i3-wm i3status dmenu sysstat
+```console
+# pacman -Syy i3-wm i3status dmenu sysstat
+```
 
 ### Simple Install
 
-    wget "https://git.sr.ht/~heckyel/i3-config/blob/master/install.sh" -O "$HOME/install.sh"
+```console
+$ wget "https://git.sr.ht/~heckyel/i3-config/blob/master/install.sh" -O "$HOME/install.sh"
+```
 
 Execute `install.sh`
 
-    bash "$HOME/install.sh"
+```console
+$ bash "$HOME/install.sh"
+```
 
 clean up install file
 
-    rm "$HOME/install.sh"
+```console
+$ rm "$HOME/install.sh"
+```
 
 ### Installed optional
 
-    pacman -Syy lxappearance nitrogen gnome-disk-utility
+```console
+# pacman -Syy lxappearance nitrogen gnome-disk-utility
+```
 
 ### Xenocara or Xorg config
 
@@ -79,7 +89,9 @@ exec i3
 
 Uncomment in `~/.config/i3/config`
 
-    # exec --no-startup-id dhcpcd-gtk
+```bash
+# exec --no-startup-id dhcpcd-gtk
+```
 
 ### Shortcuts