Documentation/device_model: Fix 'udevadm monitor' test instruction

The test instruction seems let the user to follow the test instruction
we did in previous steps, but no previous step crated type 'test'
device.  Rather than that, task 3 asked the userto create name 'name'
and type 'type' device.  Update the instruction to reflect it.

Signed-off-by: SeongJae Park <sj38.park@gmail.com>

Author: sjp38

Documentation/teaching/labs/device_model.rst

@@ -1277,7 +1277,7 @@ Use the ``udevadm monitor`` command and observe what happens when:
 
 * the ``bex.ko`` and ``bex_misc.ko`` modules are inserted
 
-* a new device with the type "test" is created
+* a new device with the type "type" is created
 
 * a new device with the type "misc" and version 2 is created