Update README.rst

Author: nickvergessen

README.rst

@@ -52,7 +52,7 @@ Structure
 
 Of course, think about structure. Keep in mind that we try NOT to move or rename
 pages once they are created! Lots of external sources link to our documentation,
-including the indexing by Google of course. So once you create a page with a certain
+including the indexing by search engines of course. So once you create a page with a certain
 name, it has to stay in that location and with that name. Think of it as API stability
 - we have to ensure things stay as they are as much as possible. Renaming or moving
 is only allowed in exceptional circumstances and only when a redirect is put in place.