Fixed typo.

_develop/overview_auth.md

@@ -7,7 +7,7 @@ permalink: /:collection/:path.html
 
 {:.no_toc}
 
-Blockstack Auth provides single sign on and authentication without third parties or remote servers. On this page, you'll get an overview of authentication from an developer and user perspective. The following topics are covered:
+Blockstack Auth provides single sign on and authentication without third parties or remote servers. On this page, you'll get an overview of authentication from a developer and user perspective. The following topics are covered:
 
 * TOC
 {:toc}