Update lvm-extend.md

Spelling issues again

source/operatingsystems/linux/basics/lvm-extend.md

@@ -127,11 +127,11 @@ I added 5G to the VM, and this disk is ~5G in size, so we've identified where it
 
 # Resized disk method
 
-We've identified that one of the disks has been resized - `sdb` in this case.
+We've identified that one of the disks has been resized - ```sdb``` in this case.
 
 ## Expand the partition if necessary
 
-If the LVM PV refers to a partition on a disk (e.g. /dev/sdb3) rather than a complete disk (/dev/sdb), you'll first need to expand the partition to use the new space.   Use the :code:```growpart```  command to do this:
+If the LVM PV refers to a partition on a disk (e.g. /dev/sdb3) rather than a complete disk (/dev/sdb), you'll first need to expand the partition to use the new space.   Use the ```growpart```  command to do this:
 
 ```growpart <disk> <partition number>```
 
@@ -141,7 +141,7 @@ for example
 
 Note that it is intentional that there is a space between the '/dev/sdb'  and '3'.  It's also important to note that this will only work if the partition number is the highest numbered on on the disk.  For example, if you had /dev/sdb1, /dev/sdb2, /dev/sdb3, /dev/sdb4, and your PV was /dev/sdb3,  you couldn't expand /dev/sdb3  because /dev/sdb4 would be in the way.   Contact support for advice if you find yourself in this situation.
 
-The growpart command isn't always installed by default on a server, you may need to install it first using yum / apt  / dnf as appropriate.
+The ```growpart``` command isn't always installed by default on a server, you may need to install it first using yum / apt  / dnf as appropriate.
 
 ## Resize the physical volume to use the new space