fix: Add syntax highlighting to code blocks

system/TOGGLING_CAPSLOCK_PROGRAMMATICALLY.MD

@@ -1,5 +1,5 @@
 YOU CAN TOGGLE CAPS LOCK FROM COMMAND LINE BY DOING:
-```
+```bash
 xdotool key Caps_Lock
 ```
 

system/changing-brightness-from-console.md

@@ -5,13 +5,13 @@ Read [this](https://wiki.archlinux.org/title/backlight) and you are done :D
 Here is the tl;dr part.
 
 Run `ls /sys/class/backlight/` to see which graphics card is managing your backlight. I'm assuming you get an ouput like `intel_backlight`. Then run this:
-```
+```bash
 ls /sys/class/backlight/intel_backlight
 actual_brightness bl_power brightness device/
 max_brightness power/ scale subsystem/ type uevent
 ```
 Read the `max_brightness` value and then set your brightness to something smaller than that value:
-```
+```bash
 cat /sys/class/backlight/intel_backlight/max_brightness
 echo 100 > /sys/class/backlight/intel_backlight/brightness
 ```
@@ -23,7 +23,7 @@ RUN+="/bin/chgrp video /sys/class/backlight/intel_backlight/brightness"
 RUN+="/bin/chmod g+w /sys/class/backlight/intel_backlight/brightness"
 ```
 and add yourself to the `video` group. 
-```
+```bash
 sudo usermod -aG video $USER
 ```
 

system/connecting-to-a-device-via-bluetooth.md

@@ -1,5 +1,5 @@
 If you want to connect to a device via bluetooth:
-```
+```bash
 sudo systemctl enable bluetooth.service
 bluetoothctl power on
 bluetoothctl devices # to find the mac address of your device

system/deleting-a-repository-that-is-not-needed.md

@@ -7,7 +7,7 @@ N: See apt-secure(8) manpage for repository creation and user configuration deta
 
 You will need to find corresponding file in `sources.list.d` and delete it.
 
-```
+```bash
 cd /etc/apt/sources.list.d
 sudo rm bad-repo.list
 ```

system/enabling-touchpad-with-X11-config-file.md

@@ -18,11 +18,11 @@ While this is effective it certainly isn’t copy-paste drop dead simple and is
 
 ## Doing it the X11 config way
 X11 provides configurations in a directory “X11/xorg.conf.d/” this directory could live in various places on your system depending on your distribution. However, X11 will always attempt to also load configurations from /etc/X11/xorg.conf.d/ when present. To ensure the directory exists, run:
-```
+```bash
 sudo mkdir -p /etc/X11/xorg.conf.d
 ```
 Next we’ll create a new file “90-touchpad.conf”. The configuration file names end with .conf and are read in ASCII order—by convention file names begin with two digits followed by a dash.
-```
+```bash
 sudo touch /etc/X11/xorg.conf.d/90-touchpad.conf
 ```
 Now open up the file your editor of choice (with suitable write permission of course) and paste the following:

system/remapping-capslock-to-ctrl.md

@@ -4,7 +4,7 @@ Here is how it should be done:
 
 If you want to remap it for X server, add the following line to your `~/.xsession` or `~/.xinitrc`. Make sure to add it before `exec whatever_window_manager` you are using:
 
-```
+```bash
 setxkbmap -option 'caps:ctrl_modifier'
 ```
 [source](https://superuser.com/questions/566871/how-to-map-the-caps-lock-key-to-escape-key-in-arch-linux)

system/setting-keyboard-layout-for-login-screen.md

@@ -1,6 +1,6 @@
 Recently, I switched to dvorak layout and I am using it everywhere to get used to it. This was the command that worked everywhere (including the login screen):
 
-```
+```bash
 localectl --no-convert set-x11-keymap us pc105 dvp caps:ctrl_modifier
 ```
 

system/turning-off-capslock-when-esc-is-pressed.md

@@ -3,7 +3,7 @@ When my Ctrl key broken, I remapped Capslock to Ctrl as it was the most useless
 I am a vim user and I don't use Capslock other than typing some constant variable names or SQL syntax etc. They are all happening in vim, specifically, in insert mode. Whenever I switch to normal mode, I want my Capslock to be off. I sometimes forget and instead of moving down with `j`, I find myself `J`oining lines. This happened more than 3 times so it is time to do something. 
 
 I could solve this problem in keyboard level because I have a programmable keyboard. I didn't want to this because sometimes I use my laptop's keyboard and I don't want them to behave differently. So I solved it on OS level. Here are the commands that I run in order to achieve this effect:
-```
+```bash
 mkdir -p ~/.xkb/keymap/
 mkdir -p ~/.xkb/symbols/
 vim ~/.xkb/symbols/mysymbols

system/unmounting-a-busy-device.md

@@ -1,5 +1,5 @@
 Make sure that you are not inside the mounted path. 
 
-``````
+```bash
 sudo umount /path/to/dev
-``````
+```

system/writing-ip-table-rules.md

@@ -1,5 +1,5 @@
 Today I wanted to ssh into my desktop from my laptop. They were both connected to my phone. Laptop was connected via Wi-Fi and the desktop was connected via USB tethering. Since they are not connected in the same way, they were on different networks and it was not possible to ssh into the other computer. I searched about the problem and found [this article](https://www.systutorials.com/port-forwarding-using-iptables/). Since my phone was rooted, I could run any command I want. The final set of commands which allowed me to ssh between each computers were:
-```
+```bash
 # from laptop to desktop
 iptables -t nat -A POSTROUTING ! -d 192.168.43.0/24 -o rndis0 -j MASQUERADE
 iptables -A PREROUTING -t nat -i swlan0 -p tcp --dport 22 -j DNAT --to 192.168.42.17:22