Updated Cloud Cache Benefits (markdown)

Cloud-Cache-Benefits.md

@@ -44,6 +44,7 @@ However, how to make SeaweedFS work with data already on cloud?
   * Warm up cache for by folder, file name pattern, file size, file age, etc.
   * Uncache by folder, file name pattern, file size, file age, etc.
   * Optionally write data back to cloud storage.
+  * One system for both remote storage cache and local storage.
 * Flexible
   * Can write data back to work with existing cloud ecosystems.
   * Can transparently switch to different cloud storage vendors.