four tabs for spaces

git-svn-id: http://svn.openlayers.org/trunk/openlayers@6497 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

examples/buffer.html

@@ -42,13 +42,13 @@
         </div>
 
         <p id="shortdesc">
-        	This example shows the use of the buffer layer option for any layer that inherits from OpenLayers.Layer.Grid.
+            This example shows the use of the buffer layer option for any layer that inherits from OpenLayers.Layer.Grid.
         </p>
 
         <div id="map"></div>
 
         <div id="docs">
-        	Use the buffer property to control how many tiles are included
+            Use the buffer property to control how many tiles are included
             outside the visible map area. Default is 2.
         </div>
     </body>