Fix misnamed auth option

Author: JordonPhillips

codegen/core/src/main/java/software/amazon/smithy/python/codegen/HttpAuthGenerator.java

@@ -77,7 +77,7 @@ private void generateAuthSchemeResolver(
         writer.write("""
                 class $1L:
                     def resolve_auth_scheme(self, auth_parameters: AuthParams[Any, Any]) -> list[AuthOptionProtocol]:
-                        auth_options: list[_AuthOption] = []
+                        auth_options: list[AuthOptionProtocol] = []
 
                         ${2C|}
                         ${3C|}