Update spacy evaluate example
@@ -377,7 +377,7 @@ pipeline.
```bash
$ python -m spacy evaluate [model] [data_path] [--displacy-path] [--displacy-limit]
-[--gpu-id] [--gold-preproc]
+[--gpu-id] [--gold-preproc] [--return-scores]
```
| Argument | Type | Description |
