Fix a listing

Author: lilasta

text/1440-drop-types-in-const.md

@@ -64,9 +64,9 @@ A `const` item's destructor _will_ run at each point where the `const` item is u
 
 - Runtime initialisation of a raw pointer can be used instead (as the `lazy_static` crate currently does on stable)
 - On nightly, a bug related to `static` and `UnsafeCell<Option<T>>` can be used to remove the dynamic allocation.
- - Both of these alternatives require runtime initialisation, and incur a checking overhead on subsequent accesses.
+  - Both of these alternatives require runtime initialisation, and incur a checking overhead on subsequent accesses.
 - Leaking of objects could be addressed by using C++-style `.dtors` support
- - This is undesirable, as it introduces confusion around destructor execution order.
+  - This is undesirable, as it introduces confusion around destructor execution order.
 
 # Unresolved questions
 [unresolved]: #unresolved-questions