minor comment cleanup.

demo_docs/source/conf.py

@@ -107,7 +107,7 @@ html_theme = 'sphinx_rtd_theme'
 # further.  For a list of options available for each theme, see the
 # documentation.
 html_theme_options = {
-    # 'sticky_navigation' : False  # Set to True to "stick" the navigation during scrolling
+    # 'sticky_navigation' : True  # Set to False to disable the sticky nav while scrolling.
 }
 
 # Add any paths that contain custom themes here, relative to this directory.