Add icon tabs typo fix and note about logging out and in again

source/3/3.2/3.2.2/appearance.rst

@@ -16,7 +16,7 @@ The tab :guilabel:`Widget Style` changes the way windows, buttons, and menus are
  .. image:: appearance.png
 
 
-The :guilabel:`icons theme tab` changes desktop icons on your computer and if you click on the icon theme which is previewed on horizontal rows. The icon theme changes how all the icon look and how some button looks in other windows such as the reset button as well. The :guilabel:`Colorize Icons based on widget style` will slightly change the background icons with the color of the background. 
+The :guilabel:`Icons Theme` tab changes desktop icons on your computer and if you click on the icon theme which is previewed on horizontal rows. The icon theme changes how all the icon look and how some button looks in other windows such as the reset button as well. The :guilabel:`Colorize Icons based on widget style` will slightly change the background icons with the color of the background. However changing an icon theme may not apply until the application is restarted or you log out and back in again. 
 
  .. image:: appearance-icon-theme.png