Update type in McpService.java

Author: joewyz

mcp/mcp-server/src/main/java/software/amazon/smithy/java/mcp/server/McpService.java

@@ -466,7 +466,7 @@ private static JsonPrimitiveSchema createJsonPrimitiveSchema(Schema member) {
         };
 
         return JsonPrimitiveSchema.builder()
-                .typeMember(type)
+                .type(type)
                 .description(memberDescription(member))
                 .build();
     }