Fix a docstring

Author: mwcraig

src/astro_image_display_api/interface_definition.py

@@ -158,7 +158,7 @@ def get_cuts(self, image_label: str | None = None, **kwargs) -> BaseInterval:
         cuts : `astropy.visualization.BaseInterval`
             The Astropy interval object representing the current cuts.
 
-        **kwargs
+        kwargs :
             Additional keyword arguments that may be used by the viewer.
 
         Raises