Stdlib: correct many parameter names (#9815)

stdlib/winreg.pyi

@@ -14,7 +14,7 @@ if sys.platform == "win32":
     def DeleteValue(__key: _KeyType, __value: str) -> None: ...
     def EnumKey(__key: _KeyType, __index: int) -> str: ...
     def EnumValue(__key: _KeyType, __index: int) -> tuple[str, Any, int]: ...
-    def ExpandEnvironmentStrings(__str: str) -> str: ...
+    def ExpandEnvironmentStrings(__string: str) -> str: ...
     def FlushKey(__key: _KeyType) -> None: ...
     def LoadKey(__key: _KeyType, __sub_key: str, __file_name: str) -> None: ...
     def OpenKey(key: _KeyType, sub_key: str, reserved: int = 0, access: int = 131097) -> HKEYType: ...