Added cross-references to venv definition.
diff --git a/Doc/library/venv.rst b/Doc/library/venv.rst
index ac0115b..f761a00 100644
--- a/Doc/library/venv.rst
+++ b/Doc/library/venv.rst
@@ -88,7 +88,7 @@
 
 whereas on Windows, you might do::
 
-    c:\> <venv>/Scripts/activate
+    C:\> <venv>/Scripts/activate
 
 if you are using the ``cmd.exe`` shell, or perhaps::
 
@@ -108,6 +108,8 @@
 ``deactivate.bat`` and ``Deactivate.ps1`` which are installed when the venv is
 created.
 
+.. _venv-def:
+
 .. note:: A virtual environment (also called a ``venv``) is a Python
    environment such that the Python interpreter, libraries and scripts
    installed into it are isolated from those installed in other virtual