fix 404 link in old blog post

Author: SethTisue

_posts/2015-06-25-bagwell-award-2015.md

@@ -9,7 +9,7 @@ We are pleased to announce that the Phil Bagwell Memorial Scala Community Award
 
 Bill is known to Scala users as:
 
-* creator of [ScalaTest](https://www.scalatest.org), a popular open-source test framework first [released in 2008](https://www.artima.com/weblogs/viewpost.jsp?thread=222678), as well as other tools and libraries such as [Scalactic](https://www.scalactic.org)
+* creator of [ScalaTest](https://www.scalatest.org), a popular open-source test framework first [released in 2008](https://web.archive.org/web/20160320090144/https://www.artima.com/weblogs/viewpost.jsp?thread=222678), as well as other tools and libraries such as [Scalactic](https://www.scalactic.org)
 * co-author of the first Scala book, [_Programming in Scala_](https://www.artima.com/shop/programming_in_scala_3ed) (Artima)
 * founder of [Artima](https://www.artima.com/aboutartima.html), which continues to publish [Scala-themed books](https://www.artima.com/shop/catalog), and hosted Scala-themed blogs and forums which were important in spreading the news about Scala in its early years
 * friendly and tireless conference-goer, presenter, and trainer