bpo-37403: Touch up venv docs (GH-14458)
Add a versionadded for PS Core and note that `.venv` is a common virtual environment name.
diff --git a/Doc/tutorial/venv.rst b/Doc/tutorial/venv.rst
index d8bb2f5..f422146 100644
--- a/Doc/tutorial/venv.rst
+++ b/Doc/tutorial/venv.rst
@@ -50,6 +50,12 @@
and also create directories inside it containing a copy of the Python
interpreter, the standard library, and various supporting files.
+A common directory location for a virtual environment is ``.venv``.
+This name keeps the directory typically hidden in your shell and thus
+out of the way while giving it a name that explains why the directory
+exists. It also prevents clashing with ``.env`` environment variable
+definition files that some tooling supports.
+
Once you've created a virtual environment, you may activate it.
On Windows, run::