Update macros context code to use whitebox context

_overviews/reflection/annotations-names-scopes.md

@@ -122,8 +122,8 @@ supports the `sorted` method, which sorts members *in declaration order*.
 The following example returns a list of the symbols of all final members
 of the `List` class, in declaration order:
 
-    scala> val overridden = listTpe.decls.sorted.filter(_.isFinal)
-    overridden: List(method isEmpty, method map, method collect, method flatMap, method takeWhile, method span, method foreach, method reverse, method foldRight, method length, method lengthCompare, method forall, method exists, method contains, method find, method mapConserve, method toList)
+    scala> val finals = listTpe.decls.sorted.filter(_.isFinal)
+    finals: List(method isEmpty, method map, method collect, method flatMap, method takeWhile, method span, method foreach, method reverse, method foldRight, method length, method lengthCompare, method forall, method exists, method contains, method find, method mapConserve, method toList)
 
 ## Exprs
 

_overviews/reflection/symbols-trees-types.md

@@ -701,18 +701,22 @@ method.
 _Note:_ when using macros, one shouldn’t use `ToolBox.parse`. This is because
 there’s already a `parse` method built into the macro context. For example:
 
+    bash$ scala -Yrepl-class-based:false
+
     scala> import scala.language.experimental.macros
     import scala.language.experimental.macros
 
-    scala> def impl(c: scala.reflect.macros.Context) = c.Expr[Unit](c.parse("println(2)"))
-    impl: (c: scala.reflect.macros.Context)c.Expr[Unit]
+    scala> def impl(c: scala.reflect.macros.whitebox.Context) = c.Expr[Unit](c.parse("println(2)"))
+    def impl(c: scala.reflect.macros.whitebox.Context): c.Expr[Unit]
 
     scala> def test: Unit = macro impl
-    test: Unit
+    def test: Unit
 
     scala> test
     2
 
+You can find more about the two `Context`s in [this Macros article]({{ site.baseurl }}/overviews/macros/blackbox-whitebox.html).
+
 ##### Typechecking with ToolBoxes
 
 As earlier alluded to, `ToolBox`es enable one to do more than just