ath9k: typo fix in a comment

Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/ath9k/ath9k.h

@@ -577,7 +577,7 @@ struct ath9k_vif_iter_data {
 	int naps;      /* number of AP vifs */
 	int nmeshes;   /* number of mesh vifs */
 	int nstations; /* number of station vifs */
-	int nwds;      /* number of nwd vifs */
+	int nwds;      /* number of WDS vifs */
 	int nadhocs;   /* number of adhoc vifs */
 	int nothers;   /* number of vifs not specified above. */
 };