package/iw: update the upstream URL in Config.in

Update the upstream URL in the help text in Config.in. This
addresses the 'Invalid(404)' URL status in the package stats
web page output.

Signed-off-by: Mark Corbin <mark@dibsco.co.uk>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/iw/Config.in

@@ -5,7 +5,7 @@ config BR2_PACKAGE_IW
 	help
 	  Utility for wireless devices using the mac80211 kernel stack
 
-	  http://wireless.kernel.org/en/users/Documentation/iw
+	  https://wireless.wiki.kernel.org/en/users/documentation/iw
 
 comment "iw needs a toolchain w/ threads"
 	depends on !BR2_TOOLCHAIN_HAS_THREADS