doc: fix documentation about uio_hv_generic

The vmbus sysfs file names changed in
 commit f6b2db08 ("vmbus: make sysfs names consistent with PCI")
and the uio documenatation does not match the current names.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Documentation/driver-api/uio-howto.rst

@@ -667,27 +667,28 @@ Making the driver recognize the device
 Since the driver does not declare any device GUID's, it will not get
 loaded automatically and will not automatically bind to any devices, you
 must load it and allocate id to the driver yourself. For example, to use
-the network device GUID::
+the network device class GUID::
 
      modprobe uio_hv_generic
      echo "f8615163-df3e-46c5-913f-f2d2f965ed0e" > /sys/bus/vmbus/drivers/uio_hv_generic/new_id
 
 If there already is a hardware specific kernel driver for the device,
 the generic driver still won't bind to it, in this case if you want to
-use the generic driver (why would you?) you'll have to manually unbind
-the hardware specific driver and bind the generic driver, like this::
+use the generic driver for a userspace library you'll have to manually unbind
+the hardware specific driver and bind the generic driver, using the device specific GUID
+like this::
 
-          echo -n vmbus-ed963694-e847-4b2a-85af-bc9cfc11d6f3 > /sys/bus/vmbus/drivers/hv_netvsc/unbind
-          echo -n vmbus-ed963694-e847-4b2a-85af-bc9cfc11d6f3 > /sys/bus/vmbus/drivers/uio_hv_generic/bind
+          echo -n ed963694-e847-4b2a-85af-bc9cfc11d6f3 > /sys/bus/vmbus/drivers/hv_netvsc/unbind
+          echo -n ed963694-e847-4b2a-85af-bc9cfc11d6f3 > /sys/bus/vmbus/drivers/uio_hv_generic/bind
 
 You can verify that the device has been bound to the driver by looking
 for it in sysfs, for example like the following::
 
-        ls -l /sys/bus/vmbus/devices/vmbus-ed963694-e847-4b2a-85af-bc9cfc11d6f3/driver
+        ls -l /sys/bus/vmbus/devices/ed963694-e847-4b2a-85af-bc9cfc11d6f3/driver
 
 Which if successful should print::
 
-      .../vmbus-ed963694-e847-4b2a-85af-bc9cfc11d6f3/driver -> ../../../bus/vmbus/drivers/uio_hv_generic
+      .../ed963694-e847-4b2a-85af-bc9cfc11d6f3/driver -> ../../../bus/vmbus/drivers/uio_hv_generic
 
 Things to know about uio_hv_generic
 -----------------------------------