update Kconfig

components/libc/Kconfig

@@ -54,9 +54,9 @@ if RT_USING_LIBC
 endif
 
 if RT_USING_LIBC != y
-        config RT_LIBC_USING_TIME
-        bool "Enable TIME FUNCTIONS WITHOUT COMPILER'S LIBC"
-        default y
+    config RT_LIBC_USING_TIME
+    bool "Enable TIME FUNCTIONS WITHOUT COMPILER'S LIBC"
+    default y
 endif
 
 endmenu