Fix typos in comment messages (#3267)

Fix typos.

linera-witty/src/type_traits/mod.rs

@@ -68,7 +68,7 @@ pub trait WitStore: WitType {
 
     /// Lowers the type into its flat layout representation.
     ///
-    /// May write to the `memory` if the type has references to heap data or if it doesn't fix in
+    /// May write to the `memory` if the type has references to heap data or if it doesn't fit in
     /// the maximum flat layout size.
     fn lower<Instance>(
         &self,

linera-witty/tests/common/test_instance.rs

@@ -36,7 +36,7 @@ pub trait TestInstanceFactory {
     /// The type received by host functions to use for reentrant calls.
     type Caller<'caller>;
 
-    /// Loads a test module with the provided `module_name` from the named `group`_
+    /// Loads a test module with the provided `module_name` from the named `group`
     fn load_test_module<ExportedFunctions>(
         &mut self,
         group: &str,

linera-witty/tests/common/wit_interface_test.rs

@@ -9,7 +9,7 @@ use linera_witty::{
     wit_generation::WitInterface,
 };
 
-/// Expected snippets for the `entryoint` interface.
+/// Expected snippets for the `entrypoint` interface.
 // The `wit_import` integration test does not use an `Entrypoint` interface
 #[allow(dead_code)]
 pub const ENTRYPOINT: (&str, &[&str], &[(&str, &str)]) =