Address misc review comments

Author: brianschubert

docs/source/typed_dict.rst

@@ -334,5 +334,5 @@ to use inline TypedDict syntax. For example:
         type Z = {"a": int, "b": int}  # same as above (Python 3.12+ only)
 
     This restriction does not apply to the :pep:`764` syntax.
-    Also, due to incompatibility with runtime type-checking it is strongly recommended
+    Also, due to incompatibility with runtime type-checking, it is strongly recommended
     to *not* use legacy inline syntax in union types.

test-data/unit/check-typeddict.test

@@ -3821,6 +3821,15 @@ def f():
 [builtins fixtures/dict.pyi]
 [typing fixtures/typing-full.pyi]
 
+[case testTypedDictInlinePEP764UsesExtensionSyntax]
+# flags: --enable-incomplete-feature=NewInlineTypedDict
+from typing import TypedDict
+x: TypedDict[{'name': str, 'production': {'location': str}}]  # E: Legacy inline TypedDict is experimental, must be enabled with --enable-incomplete-feature=InlineTypedDict \
+                                                              # N: Did you mean TypedDict[...]?
+reveal_type(x)  # N: Revealed type is "TypedDict({'name': builtins.str, 'production': TypedDict({'location': builtins.str})})"
+[builtins fixtures/dict.pyi]
+[typing fixtures/typing-typeddict.pyi]
+
 # ReadOnly
 # See: https://peps.python.org/pep-0705