Small edit to the caching docs.

Turns out, super-lightning is not faster than normal lightning. :-)

git-svn-id: http://code.djangoproject.com/svn/django/trunk@9949 bcc190cf-cafb-0310-a4f2-bffc1f526a37

docs/topics/cache.txt

@@ -63,7 +63,7 @@ dramatically increase site performance.
 
 Memcached is available for free at http://danga.com/memcached/ . It runs as a
 daemon and is allotted a specified amount of RAM. All it does is provide an
-interface -- a *super-lightning-fast* interface -- for adding, retrieving and
+interface -- a *lightning-fast* interface -- for adding, retrieving and
 deleting arbitrary data in the cache. All data is stored directly in memory,
 so there's no overhead of database or filesystem usage.