usb: host: uhci-hcd.c Remove one to many n's in a word.

The Patch below removes one to many "n's" in a word..
Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
CC: Alan Stern <stern@rowland.harvard.edu>
CC: linux-usb@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/host/uhci-hcd.c

@@ -471,7 +471,7 @@ static irqreturn_t uhci_irq(struct usb_hcd *hcd)
 
 /*
  * Store the current frame number in uhci->frame_number if the controller
- * is runnning.  Expand from 11 bits (of which we use only 10) to a
+ * is running.  Expand from 11 bits (of which we use only 10) to a
  * full-sized integer.
  *
  * Like many other parts of the driver, this code relies on being polled