Fix scope class link (#3420)

Author: ntrel

spec/class.dd

@@ -1196,7 +1196,7 @@ void main()
         $(P Multiple $(I AliasThis) are currently not allowed.)
 
 $(H2 $(LNAME2 auto, Scope Classes))
-$(B Note): Scope classes have been $(DDSUBLINK deprecate, scope for allocating classes on the stack, recommended for deprecation).
+$(B Note): Scope classes have been $(DDSUBLINK deprecate, scope as a type constraint, recommended for deprecation).
 
         $(P A scope class is a class with the $(D scope) attribute, as in:)