bpo-24356: Specify which Python binary will be used with venv (GH-6589)

diff --git a/Doc/library/venv.rst b/Doc/library/venv.rst
index 035fac4..def926b 100644
--- a/Doc/library/venv.rst
+++ b/Doc/library/venv.rst
@@ -17,12 +17,18 @@
 
 The :mod:`venv` module provides support for creating lightweight "virtual
 environments" with their own site directories, optionally isolated from system
-site directories.  Each virtual environment has its own Python binary (allowing
-creation of environments with various Python versions) and can have its own
-independent set of installed Python packages in its site directories.
+site directories.  Each virtual environment has its own Python binary (which
+matches the version of the binary that was used to create this environment) and
+can have its own independent set of installed Python packages in its site
+directories.
 
 See :pep:`405` for more information about Python virtual environments.
 
+.. seealso::
+
+   `Python Packaging User Guide: Creating and using virtual environments
+   <https://packaging.python.org/installing/#creating-virtual-environments>`__
+
 .. note::
    The ``pyvenv`` script has been deprecated as of Python 3.6 in favor of using
    ``python3 -m venv`` to help prevent any potential confusion as to which