message: Typo fix in `platform/src/subscribe.rs`.
diff: @@ -16,7 +16,7 @@ pub struct Subscribe<'scope, S: Syscalls, const DRIVER_NUM: u32, const SUBSCRIBE
  //
  // Covariance would be unsound, as that would allow code with a
  // `Subscribe<'static, ...>` to register an upcall that lasts for a shorter
  - // lifetime, resulting in use-after-free if the upcall in invoked.
  + // lifetime, resulting in use-after-free if the upcall is invoked.
  // Contravariance would be sound, but is not necessary and may be confusing.
  //
  // Additionally, we want to have at least one private member of this struct
  