update image path

doc/Emulating-Olimex.md

@@ -23,11 +23,12 @@ dnf install qemu-user-static systemd-container
 
 You need to have the [A20 Debian image](http://images.olimex.com/release/a20/) extracted somewhere in your filesystem.
 This means you either extracted it from the image file, you mounted the image file, or you have already written it onto a microSD card and mounted that on your system.
+As an example, we have extracted the whole image into `/tmp/olimex`.
 
 All that's left is to execute the following command as root:
 
 ```
-systemd-nspawn --bind=/dev/ttyACM0 -b -D /path/to/a20/image/fs/root
+systemd-nspawn --bind=/dev/ttyACM0 -b -D /tmp/olimex
 ```
 
 Explanations of the parameters: