ALSA: Fix references to Documentation/.*/MultiSound

Now that the documentation/script file got restored, fix the
references within the Kernel tree.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/isa/Kconfig b/sound/isa/Kconfig
index 43b35a8..d7db1ee 100644
--- a/sound/isa/Kconfig
+++ b/sound/isa/Kconfig
@@ -459,7 +459,7 @@
 	  Say M here if you have a Turtle Beach MultiSound Classic, Tahiti or
 	  Monterey (not for the Pinnacle or Fiji).
 
-	  See <file:Documentation/sound/oss/MultiSound> for important information
+	  See <file:Documentation/sound/cards/multisound.sh> for important information
 	  about this driver.  Note that it has been discontinued, but the
 	  Voyetra Turtle Beach knowledge base entry for it is still available
 	  at <http://www.turtlebeach.com/site/kb_ftp/790.asp>.