Add placeholder doc comments to macro-generated enums (#2872)

* Add placeholder doc comments to macro-generate enums

* Add doc comments to generated router parse error enums

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Co-authored-by: Evan Almloff <evanalmloff@gmail.com>

packages/router-macro/src/redirect.rs

@@ -32,7 +32,7 @@ impl Redirect {
     pub fn error_type(&self) -> TokenStream {
         let error_name = self.error_ident();
 
-        create_error_type(error_name, &self.segments, None)
+        create_error_type(&self.route.value(), error_name, &self.segments, None)
     }
 
     pub fn parse_query(&self) -> TokenStream {