fix alphabetical order

Author: HTGAzureX1212

library/coretests/tests/lib.rs

@@ -13,10 +13,10 @@
 #![feature(bigint_helper_methods)]
 #![feature(bstr)]
 #![feature(cell_update)]
+#![feature(char_max_len)]
 #![feature(clone_to_uninit)]
 #![feature(const_eval_select)]
 #![feature(const_swap_nonoverlapping)]
-#![feature(char_max_len)]
 #![feature(const_align_offset)]
 #![feature(const_align_of_val_raw)]
 #![feature(const_black_box)]