fix: _typing.RowColKwds:2: ERROR: Unknown target name: "generic". [docutils]

See https://altair-viz.github.io/user_guide/generated/theme/altair.theme.RowColKwds.html

Discovered this fix in #3631 (comment)

Author: dangotbanned

altair/vegalite/v5/schema/_typing.py

@@ -128,6 +128,10 @@ class Value(TypedDict, Generic[T]):
     value: T
         Wrapped value.
 
+    Returns
+    -------
+    dict
+
     .. _Generic:
         https://typing.readthedocs.io/en/latest/spec/generics.html#generics
     """
@@ -180,6 +184,10 @@ class RowColKwds(TypedDict, Generic[T], total=False):
     column: T
     row: T
 
+    Returns
+    -------
+    dict
+
     .. _Generic:
         https://typing.readthedocs.io/en/latest/spec/generics.html#generics
     """

tools/generate_schema_wrapper.py

@@ -368,6 +368,10 @@ class Value(TypedDict, Generic[T]):
     value: T
         Wrapped value.
 
+    Returns
+    -------
+    dict
+
     .. _Generic:
         https://typing.readthedocs.io/en/latest/spec/generics.html#generics
     """
@@ -420,6 +424,10 @@ class RowColKwds(TypedDict, Generic[T], total=False):
     column: T
     row: T
 
+    Returns
+    -------
+    dict
+
     .. _Generic:
         https://typing.readthedocs.io/en/latest/spec/generics.html#generics
     """