📝 Fix first-steps entrypoint wording

Co-authored-by: Cursor <[email protected]>

docs/en/docs/tutorial/first-steps.md

@@ -194,7 +194,7 @@ Or, you can also pass the `--entrypoint` option to the `fastapi dev` command:
 $ fastapi dev --entrypoint main:app
 ```
 
-But you would have to remember to pass the correct path\entrypoint every time you call the `fastapi` command.
+But you would have to remember to pass the correct path/entrypoint every time you call the `fastapi` command.
 
 Additionally, other tools might not be able to find it, for example the [VS Code Extension](../editor-support.md) or [FastAPI Cloud](https://fastapicloud.com), so it is recommended to use the `entrypoint` in `pyproject.toml`.