Update curated.md

Fixed a typo

Author: marcmtk

curated.md

@@ -7,7 +7,7 @@ permalink: /curated/
 ## Analytics
 
 - [OLAP Operation in R](http://architects.dzone.com/articles/olap-operation-r)
-- [Journal of Statical Software: Tidy data](http://www.jstatsoft.org/v59/i10/paper)
+- [Journal of Statistical Software: Tidy data](http://www.jstatsoft.org/v59/i10/paper)
 
 
 ### GitHub