bpo-30840: Document relative imports (#12831)

* document relative imports

* 📜🤖 Added by blurb_it.

* fix indentation error

* remove indentation

* Document relative imports

* Document relative imports

* remove from ...package

* Document relative imports

* remove trailing space

* Document relative imports

* Document relative imports
diff --git a/Doc/reference/simple_stmts.rst b/Doc/reference/simple_stmts.rst
index 00964af..207057c 100644
--- a/Doc/reference/simple_stmts.rst
+++ b/Doc/reference/simple_stmts.rst
@@ -828,7 +828,8 @@
 So if you execute ``from . import mod`` from a module in the ``pkg`` package
 then you will end up importing ``pkg.mod``. If you execute ``from ..subpkg2
 import mod`` from within ``pkg.subpkg1`` you will import ``pkg.subpkg2.mod``.
-The specification for relative imports is contained within :pep:`328`.
+The specification for relative imports is contained in
+the :ref:`relativeimports` section.
 
 :func:`importlib.import_module` is provided to support applications that
 determine dynamically the modules to be loaded.