Update 2014-03-21-react-v0.10.md

Fix link to React v0.10 RC
(cherry picked from commit 7172b1d)

Author: harshadsabne

docs/_posts/2014-03-21-react-v0.10.md

@@ -4,7 +4,7 @@ layout: post
 author: Paul O’Shannessy
 ---
 
-Hot on the heels of the [release candidate earlier this week](/react/blog/2014/02/20/react-v0.10rc.html), we're ready to call v0.10 done. The only major issue we discovered had to do with the `react-tools` package, which has been updated. We've copied over the changelog from the RC with some small clarifying changes.
+Hot on the heels of the [release candidate earlier this week](/react/blog/2014/03/19/react-v0.10-rc1.html), we're ready to call v0.10 done. The only major issue we discovered had to do with the `react-tools` package, which has been updated. We've copied over the changelog from the RC with some small clarifying changes.
 
 The release is available for download from the CDN: