fix syntax error in Config.in

SVN-Revision: 21062

toolchain/gcc/Config.in

@@ -71,7 +71,7 @@ config GCC_USE_GRAPHITE
 
 config GCC_USE_SYSTEM_PPL_CLOOG
 	bool
-	prompt "Use the system versions of PPL and CLooG
+	prompt "Use the system versions of PPL and CLooG"
 	depends GCC_USE_GRAPHITE
 	default n