Update write_your_own_fetch_provider.mdx

documentation/docs/tutorials/write_your_own_fetch_provider.mdx

@@ -126,7 +126,7 @@ class PostgresFetchProvider(BaseFetchProvider):
     ...
 ```
 
-You may also reference the [provider module from the postgres fetcher](https://github.com/permitio/opal-fetcher-postgres/blob/master/opal_fetcher_postgres/provider.py).
+You may also reference the [provider module from the postgres fetcher](https://github.com/permitio/opal-fetcher-postgres/blob/master/src/opal_fetcher_postgres/provider.py).
 
 ### Step 3 - implementing your FetcherConfig and FetchEvent