HID: core: fix hid_hw_open() comment

Fix comment typo for hid_hw_open().

[jkosina@suse.cz: write at least some changelog]
Signed-off-by: Hisao Tanabe <xtanabe@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/hid/hid-core.c

@@ -1798,7 +1798,7 @@ EXPORT_SYMBOL_GPL(hid_hw_stop);
  *
  * Tell underlying HW to start delivering events from the device.
  * This function should be called sometime after successful call
- * to hid_hiw_start().
+ * to hid_hw_start().
  */
 int hid_hw_open(struct hid_device *hdev)
 {