readded release2.2 page link - my bad

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 ### 2.2.0 released - 17 February 2009
 
-This new release includes [[Hammer|hammer]], a filesystem that includes instant crash recovery, 
+The [[new 2.2 release|release22]] includes [[Hammer|hammer]], a filesystem that includes instant crash recovery, 
 multi-volume file systems, data integrity checking, fine grained history retention, and the ability to 
 mirror data to other volumes.  It has undergone extensive stress-testing and is considered production-ready!