fix indent function haskell (#261)

* fix indent function

* remove extra line

Author: jadermcs

snippets/haskell-mode/function

@@ -1,6 +1,7 @@
 # -*- mode: snippet -*-
 # name: fun
 # key: fun
+# expand-env: ((yas-indent-line 'fixed))
 # --
 ${1:function-name} :: ${2:type}
-$1 ${3:arguments} $0
+$1 ${3:arguments} $0