--bless ConstParamTy ui tests

Author: WaffleLapkin

tests/ui/const-generics/adt_const_params/const_param_ty_bad.rs

@@ -5,7 +5,7 @@ fn check(_: impl std::marker::ConstParamTy) {}
 
 fn main() {
     check(main);               //~ error: `fn() {main}` can't be used as a const parameter type
-    check(|| {});              //~ error: `[closure@fake-test-src-base/const-generics/adt_const_params/const_param_ty_bad.rs:8:11: 8:13]` can't be used as a const parameter type
+    check(|| {});              //~ error: `[closure@$DIR/const_param_ty_bad.rs:8:11: 8:13]` can't be used as a const parameter type
     check(main as fn());       //~ error: `fn()` can't be used as a const parameter type
     check(&mut ());            //~ error: `&mut ()` can't be used as a const parameter type
     check(&mut () as *mut ()); //~ error: `*mut ()` can't be used as a const parameter type

tests/ui/const-generics/adt_const_params/const_param_ty_impl_bad_field.rs

@@ -8,6 +8,6 @@ struct NotParam;
 struct CantParam(NotParam);
 
 impl std::marker::ConstParamTy for CantParam {}
-//~^ error: the trait `ConstParamTy` may not be implemented for this type
+//~^ error: the trait `ConstParamTy` cannot be implemented for this type
 
 fn main() {}

tests/ui/const-generics/adt_const_params/const_param_ty_impl_bad_field.stderr

@@ -1,4 +1,4 @@
-error[E0204]: the trait `ConstParamTy` may not be implemented for this type
+error[E0204]: the trait `ConstParamTy` cannot be implemented for this type
   --> $DIR/const_param_ty_impl_bad_field.rs:10:36
    |
 LL | struct CantParam(NotParam);