chore(system): update ModelKey docstring to reflect changed attributes

Signed-off-by: Roel <75250264+RoelBollens-TomTom@users.noreply.github.com>

Author: RoelBollens-TomTom

packages/overture-schema-system/src/overture/schema/system/discovery.py

@@ -24,7 +24,7 @@
 
 @dataclass(frozen=True, slots=True)
 class ModelKey:
-    """Key identifying a registered model by namespace, theme, and type.
+    """Key identifying a registered model by name, entry point, and tags.
 
     Attributes
     ----------