Skip non-existing 'anonymous-function-syntax' page, fixes scala#771

Author: Philippus

tutorials/tour/_posts/2017-02-13-higher-order-functions.md

@@ -8,7 +8,7 @@ tutorial: scala-tour
 categories: tour
 num: 8
 next-page: nested-functions
-previous-page: anonymous-function-syntax
+previous-page: mixin-class-composition
 ---
 
 Scala allows the definition of higher-order functions. These are functions that _take other functions as parameters_, or whose _result is a function_. Here is a function `apply` which takes another function `f` and a value `v` and applies function `f` to `v`:

tutorials/tour/_posts/2017-02-13-mixin-class-composition.md

@@ -7,7 +7,7 @@ disqus: true
 tutorial: scala-tour
 categories: tour
 num: 6
-next-page: anonymous-function-syntax
+next-page: higher-order-functions
 previous-page: traits
 ---