chore(serde): fix serde conditional compilation

Author: billf

.github/workflows/main.yml

@@ -46,6 +46,8 @@ jobs:
       run: cargo check --no-default-features --features wit
     - name: Build the `registry` feature
       run: cargo check --no-default-features --features registry
+    - name: Build the `serde` feature
+      run: cargo check --no-default-features --features serde
     - name: Build all features
       run: cargo check --all-features
 

crates/wac-types/src/component.rs

@@ -100,7 +100,7 @@ impl fmt::Display for WorldId {
 pub struct ModuleTypeId(Id<ModuleType>);
 
 #[cfg(feature = "serde")]
-impl serde::Serialize for ModuleId {
+impl serde::Serialize for ModuleTypeId {
     fn serialize<S: serde::Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> {
         self.0.index().serialize(serializer)
     }