[1.3.X] Fixed django#16566 - Typo in docs/ref/files/storage.txt; than…

…ks thejaswi_puthraya.

Backport of r16580 from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.3.X@16581 bcc190cf-cafb-0310-a4f2-bffc1f526a37

docs/ref/files/storage.txt

@@ -75,7 +75,7 @@ The Storage Class
 
     .. method:: exists(name)
 
-        Returns ``True`` if a file referened by the given name already exists
+        Returns ``True`` if a file referenced by the given name already exists
         in the storage system, or ``False`` if the name is available for a new
         file.