Fixing typo leading to broken link.

Author: shravantc

Feature Planning/GlusterFS 3.5/index.md

@@ -21,12 +21,12 @@ GlusterFS 3.5
 -   [Features/readdir ahead](./readdir ahead.md)
 -   [Features/zerofill](./Zerofill.md)
 -   [Features/Brick Failure Detection](./Brick Failure Detection.md)
--   [Features/disk-encryption](./Disk-Encryption.md)
+-   [Features/disk-encryption](./Disk Encryption.md)
 -   Changelog based parallel geo-replication
 -   Improved block device translator
 
 Proposing New Features
 ----------------------
 
 New feature proposals should be built using the New Feature Template in
-the GlusterFS 3.7 planning page
+the GlusterFS 3.7 planning page