Improve Documentation for Custom Starters in kedro new (#2618)

Signed-off-by: Dominik <[email protected]>

docs/source/starters/starters.md

@@ -91,5 +91,5 @@ You can build your own starters for reuse within a project or team, as described
 To create a project from a custom starter, run:
 
 ```bash
-kedro new --starter=<path-to-starter> --directory <directory> 
+kedro new --starter=<path-to-starter> --directory <directory>
 ```