mac80211: fix copy-paste typo in Kconfig

Signed-off-by: Marco Porsch <marco.porsch@etit.tu-chemnitz.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/mac80211/Kconfig b/net/mac80211/Kconfig
index 63af254..b4ecf26 100644
--- a/net/mac80211/Kconfig
+++ b/net/mac80211/Kconfig
@@ -248,7 +248,7 @@
 	  Do not select this option.
 
 config MAC80211_MESH_SYNC_DEBUG
-	bool "Verbose mesh mesh synchronization debugging"
+	bool "Verbose mesh synchronization debugging"
 	depends on MAC80211_DEBUG_MENU
 	depends on MAC80211_MESH
 	---help---