Update packages/openapi-fetch/README.md

Co-authored-by: Drew Powers <drew@pow.rs>

Author: phk422

packages/openapi-fetch/README.md

@@ -91,7 +91,8 @@ The best part about using openapi-fetch over oldschool codegen is no documentati
 
 ![OpenAPI schema example](../../docs/public/assets/openapi-schema.png)
 
-```ts [src/my-project.ts]
+```ts
+```
 import createClient from "openapi-fetch";
 import type { paths } from "./my-openapi-3-schema"; // generated by openapi-typescript