Update compiler/src/dotty/tools/dotc/reporting/messages.scala

Author: aherlihy

Diff for: compiler/src/dotty/tools/dotc/reporting/messages.scala

@@ -2778,7 +2778,7 @@ extends TypeMsg(NotClassTypeID), ShowMatchTrace(tp):
   def explain(using Context) =
     i"""A class type includes classes and traits in a specific order. Defining a class, even an anonymous class,
         |requires specifying a linearization order for the traits it extends. For example, `A & B` is not a class type
-        |because it doesn't specify which trait takes precedence, A or B. For more information about class types, please see the Scala Language Specification 3.4.
+        |because it doesn't specify which trait takes precedence, A or B. For more information about class types, please see the Scala Language Specification.
         |Class types also can't have refinements."""
 
 class NotConstant(suffix: String, tp: Type)(using Context)