fix: update Relace Edit Tool URL from dev-endpoint to endpoint (#833)

This PR updates the Relace Edit Tool URL from `dev-endpoint` to
`endpoint` as requested.

The change was made in `src/codegen/extensions/tools/relace_edit.py` to
update the URL from:
```
https://codegen-instantapply.dev-endpoint.relace.run/v1/code/apply
```
to:
```
https://codegen-instantapply.endpoint.relace.run/v1/code/apply
```

This change routes the Relace Edit Tool to the warm servers instead of
the cold-start servers, which should eliminate the 3-minute cold-start
delay.

Co-authored-by: codegen-bot <team+codegenbot@codegen.sh>

Author: codegen-sh[bot]

src/codegen/extensions/tools/relace_edit.py

@@ -90,7 +90,7 @@ def apply_relace_edit(api_key: str, initial_code: str, edit_snippet: str, stream
     Raises:
         Exception: If the API request fails
     """
-    url = "https://codegen-instantapply.dev-endpoint.relace.run/v1/code/apply"
+    url = "https://codegen-instantapply.endpoint.relace.run/v1/code/apply"
     headers = {"Content-Type": "application/json", "Authorization": f"Bearer {api_key}"}
 
     data = {"initialCode": initial_code, "editSnippet": edit_snippet, "stream": stream}