Fix redirects

Author: Philippus

_tour/named-arguments.md

@@ -8,8 +8,9 @@ next-page: traits
 previous-page: default-parameter-values
 prerequisite-knowledge: function-syntax
 
-redirect_from: "/tutorials/tour/named-arguments.html"
-redirect_from: "/tutorials/tour/named-parameters.html"
+redirect_from: 
+  - "/tutorials/tour/named-arguments.html"
+  - "/tutorials/tour/named-parameters.html"
 ---
 
 When calling methods, you can label the arguments with their parameter names like so: