Fix Sphinx warning (missing "setting-envvars" reference).

cjerdonek · cjerdonek · commit b7c2386a3f6c · 2012-12-25T15:26:24.000-08:00
This fixes the following warning when building the docs (probably from the commit for issue #14901): "/Doc/faq/windows.rst:138: WARNING: undefined label: setting-envvars (if the link has no caption the label must precede a section header)"
diff --git a/Doc/using/windows.rst b/Doc/using/windows.rst
@@ -82,6 +82,8 @@ In order to run Python flawlessly, you might have to change certain environment
 settings in Windows.
 
 
+.. _setting-envvars:
+
 Excursus: Setting environment variables
 ---------------------------------------
 
