package/madplay: replace utf-8 hyphen by ascii hyphen

Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/madplay/Config.in

@@ -6,8 +6,8 @@ config BR2_PACKAGE_MADPLAY
 	  Command-line front-end to libmad, a high-quality MPEG audio
 	  decoder.  It currently supports MPEG-1 and the MPEG-2
 	  extension to lower sampling frequencies, as well as the de
-	  facto MPEG 2.5 format. All three audio layers — Layer I,
-	  Layer II, and Layer III (i.e. MP3) — are fully implemented.
+	  facto MPEG 2.5 format. All three audio layers - Layer I,
+	  Layer II, and Layer III (i.e. MP3) - are fully implemented.
 
 	  http://www.underbit.com/products/mad/