update defaults in doc

README.md

@@ -115,8 +115,8 @@ The available arguments are
 | `--test-folder`                  | ID of the training folder to import from Arkindex.                                  | `uuid`     |         |
 | `--transcription-worker-version` | Filter transcriptions by worker_version. Use ‘manual’ for manual filtering.         | `str/uuid` |         |
 | `--entity-worker-version`        | Filter transcriptions entities by worker_version. Use ‘manual’ for manual filtering | `str/uuid` |         |
-| `--train-prob`                   | Training set split size                                                             | `float`    | `0,7`     |
-| `--val-prob`                     | Validation set split size                                                           | `float`    | `0,15`    |
+| `--train-prob`                   | Training set split size                                                             | `float`    | `0.7`     |
+| `--val-prob`                     | Validation set split size                                                           | `float`    | `0.15`    |
 
 The `--tokens` argument expects a file with the following format.
 ```yaml