Update README.md

By default, `create=True`

Author: sylvaincom

README.md

@@ -58,7 +58,7 @@ You can find information on the latest version [here](https://anaconda.org/conda
 1. From your Python code, create and load a skore project:
     ```python
     import skore
-    my_project = skore.open("my_project", create = True)
+    my_project = skore.open("my_project")
     ```
     This will create a skore project directory named `my_project.skore` in your current working directory.