mark dependent function types as Scala 3 only

Author: bishabosha

Diff for: _overviews/scala3-book/types-dependent-function.md

@@ -6,6 +6,8 @@ languages: [ru, zh-cn]
 num: 57
 previous-page: types-structural
 next-page: types-others
+scala3: true
+versionSpecific: true
 ---
 
 A *dependent function type* describes function types, where the result type may depend on the function’s parameter values.

Diff for: _overviews/scala3-book/types-others.md

@@ -6,6 +6,8 @@ languages: [ru, zh-cn]
 num: 58
 previous-page: types-dependent-function
 next-page: ca-contextual-abstractions-intro
+scala3: true
+versionSpecific: true
 ---
 
 
@@ -19,7 +21,7 @@ Scala has several other advanced types that are not shown in this book, includin
 - Refinement types
 - Kind polymorphism
 
-For more details on these types, see the [Reference documentation][reference].
+For more details on these types, see the [Scala 3 Reference documentation][reference].