microblaze: Fix typo in Kconfig

s/Exectuable/Executable/

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>

arch/microblaze/Kconfig

@@ -248,7 +248,7 @@ endmenu
 
 source "mm/Kconfig"
 
-menu "Exectuable file formats"
+menu "Executable file formats"
 
 source "fs/Kconfig.binfmt"