staging: wlan-ng: Fix comment in prism2sta.c

This patch fix a spelling typo and modify a comment.

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/wlan-ng/prism2sta.c b/drivers/staging/wlan-ng/prism2sta.c
index 182cc7f..10ad24a 100644
--- a/drivers/staging/wlan-ng/prism2sta.c
+++ b/drivers/staging/wlan-ng/prism2sta.c
@@ -199,7 +199,7 @@
 /*----------------------------------------------------------------
 * prism2sta_reset
 *
-* Not currently implented.
+* Currently not implemented.
 *
 * Arguments:
 *	wlandev		wlan device structure