Auto merge of #1069 - RalfJung:typo, r=RalfJung

typo

Author: bors

tests/compile-fail/stacked_borrows/deallocate_against_barrier2.rs

@@ -2,7 +2,7 @@
 
 use std::cell::Cell;
 
-// Check that even `&Cell` are dereferencable.
+// Check that even `&Cell` are dereferenceable.
 // Also see <https://github.com/rust-lang/rust/issues/55005>.
 fn inner(x: &Cell<i32>, f: fn(&Cell<i32>)) {
     // `f` may mutate, but it may not deallocate!