Fixed type in tutorial.

examples/hakyll/tutorial3.markdown

@@ -90,7 +90,7 @@ the end just `key: value` mappings. A CustomPage is created using the
 ~~~~~{.haskell}
 createCustomPage :: FilePath
                  -> [FilePath]
-                 -> [(String, Either String (IO String)]
+                 -> [(String, Either String (Hakyll String)]
 ~~~~~
 
 The first argument is the `url` of the page to generate. For our index page,
@@ -103,11 +103,11 @@ This, once again, is about dependency handling. The idea is that you can choose
 which type to use for the value:
 
 - `String`: Simply a `String`.
-- `IO String`: Here, you can give an arbitrary `IO` action that will result
-  in a String. However - this action _will not be executed_ when the file
+- `Hakyll String`: Here, you can give an arbitrary `Hakyll` action that will
+  result in a String. However - this action _will not be executed_ when the file
   in `_site` is up-to-date.
 
-First, let us define this `IO String` for our index page. We want to render
+First, let us define this `Hakyll String` for our index page. We want to render
 every post using a simple template:
 
 ~~~~~{.html}

examples/hakyll/tutorial5.markdown

@@ -159,7 +159,7 @@ post lists for every tag.
 Hakyll provides a function called `readTagMap`. Let's inspect it's type.
 
 ~~~~~{.haskell}
-readTagMap [FilePath] -> IO Map String [FilePath]
+readTagMap [FilePath] -> Hakyll Map String [FilePath]
 ~~~~~
 
 You give it a list of paths, and it creates a map that, for every tag, holds