Fix the versionadded info for typing.NoReturn (GH-11880)

The earliest version that `typing.NoReturn` appears in is [3.5.4rc1](https://docs.python.org/3/whatsnew/changelog.html#python-3-5-4-release-candidate-1)

diff --git a/Doc/library/typing.rst b/Doc/library/typing.rst
index 4a03fe7ecf6b7d2dda9635169e21759a8f42c8f7..6ed09f1969db119660edc2e88cbbb220a6e74ee3 100644 (file)
--- a/Doc/library/typing.rst
+++ b/Doc/library/typing.rst
@@ -958,7 +958,7 @@ The module defines the following classes, functions and decorators:
       def stop() -> NoReturn:
           raise RuntimeError('no way')
 
-   .. versionadded:: 3.6.5
+   .. versionadded:: 3.5.4
 
 .. data:: Union