add internal link to version control ignores

docs/dev/virtualenvs.rst

@@ -310,7 +310,7 @@ This can help ensure consistency across installations, across deployments,
 and across developers.
 
 Lastly, remember to exclude the virtual environment folder from source
-control by adding it to the ignore list.
+control by adding it to the ignore list (see :ref:`Version Control Ignores<version_control_ignores>`).
 
 .. _virtualenvwrapper-ref:
 

docs/writing/gotchas.rst

@@ -232,6 +232,8 @@ Here's nice trick for removing all of these files, if they already exist::
 Run that from the root directory of your project, and all ``.pyc`` files
 will suddenly vanish. Much better.
 
+.. _version_control_ignores:
+
 Version Control Ignores
 ~~~~~~~~~~~~~~~~~~~~~~~