Fix typo in blkid command explanation

Change a typo rub to run

thx panorain

Author: bittin

docs/LiveMedia.md

@@ -54,7 +54,7 @@ Insert your target USB and locate it. There are different ways to do it but here
 
 - `lsblk` - this command gives you all the available block storage devices, including the USB block storage devices.
 
-- `sudo blkid` - this command gives you the same information as `lsblk`, but you have to rub it as root.
+- `sudo blkid` - this command gives you the same information as `lsblk`, but you have to run it as root.
 
 You need to look for /dev/sda or /dev/sdb or /dev/sdc, which is your target USB.