change formatting

input examples are now given as

```bash
input $ARG1
```

While outputs use md's '> ' sign as a quote.

system/kernel.md

@@ -4,26 +4,38 @@ tags: [ "Documentation", "System" ]
 ---
 Check which kernet modules are loaded into memory
 
-> sudo /sbin/lsmod 
+```bash
+sudo /sbin/lsmod 
+```
 
 Check which virtual box modules are loaded into memory
 
-> sudo /sbin/lsmod | grep vbox 
+```bash
+sudo /sbin/lsmod | grep vbox 
+```
 
 Virtual box is using vboxpci, vboxnetadp, vboxnetflt, vboxdr.
 
 Look at what's claiming wifi:
 
-> sudo lshw -C network
+```bash
+sudo lshw -C network
+```
 
 If this shows that the device is 'unclaimed' then it's time to add a module, e.g. ath9k.
 
-> sudo modprobe ath9k
+```bash
+sudo modprobe ath9k
+```
 
 Modules can also be 'restarted' by removing and adding them, e.g. the video module, 'uvcvideo':
 
-> sudo rmmod uvcvideo
+```bash
+sudo rmmod uvcvideo
+```
 
-> sudo modprobe uvcvideo
+```bash
+sudo modprobe uvcvideo
+```