MB-100: Cbrecoverytests Typo fix

Change-Id: I1955253249968193b90e4af6b08c915998999694
Reviewed-on: http://review.couchbase.org/27146
Reviewed-by: abhinav dangeti <abhinav.dangeti@gmail.com>
Tested-by: abhinav dangeti <abhinav.dangeti@gmail.com>