chore: minor readme fix

template/README.md.handlebars

@@ -9,7 +9,7 @@ This is an auto-generated client library for the {{info.title}} API, via the `op
 ```
 const Api{{tagName}} = require("./api{{tagName}}");
 const Configuration = require("./configuration");
-const transport = require("./nodeFetch");
+const transport = require("./fetch");
 // import any model types you need
 const { {{modelObject}} } = require("./api/model");