minor: rst fix

Author: Sam Kleinman

source/tutorial/enforce-unique-keys-for-sharded-collections.txt

@@ -42,7 +42,7 @@ Regardless of method, be aware that writes to the MongoDB database are
 to the client if MongoDB rejects a write operation because of a
 duplicate key or other error. As a result if you want to enforce
 unique keys you **must** use the safe write setting in your
-driver. See your :doc:`driver's documentation <drivers>` the
+driver. See your :doc:`driver's documentation </applications/drivers>` the
 :dbcommand:`getLastError` for more information.
 
 .. [#limitation] If you specify a unique index on a sharded