update Callable import

Author: OriolAbril

src/docstub/default_config.toml

@@ -18,7 +18,7 @@ extend_grammar = """
 #         defaults to "false"
 [tool.docstub.known_imports]
 Path = { from = "pathlib" }
-Callable = { from = "typing" }
+Callable = { from = "collections.abc" }
 np = { import = "numpy", as = "np" }
 NDArray = { from = "numpy.typing" }
 ArrayLike = { from = "numpy.typing" }