message: Clean up typos in comments
diff: @@ -1044,9 +1044,9 @@ mod inner {
  impl HostFunctionKind for WithEnv {}
  /// An empty struct to help Rust typing to determine
  - /// when a `HostFunction` does have an environment.
  + /// when a `HostFunction` has an environment.
  ///
  - /// This environment is passed by `&mut` and exists soley for the deprecated
  + /// This environment is passed by `&mut` and exists solely for the deprecated
  /// API.
  #[cfg(feature = "deprecated")]
  #[doc(hidden)]
  