Merge pull request #972 from CodeBlock/haskell-typo

Fix typo in Haskell template

Haskell.gitignore

@@ -4,7 +4,7 @@ cabal-dev
 *.hi
 *.chi
 *.chs.h
-.virthualenv
+.virtualenv
 .hsenv
 .cabal-sandbox/
 cabal.sandbox.config