Update UI test

Author: clubby789

src/test/ui/suggestions/inner_type2.rs

@@ -22,5 +22,5 @@ fn main() {
     let item = std::mem::MaybeUninit::new(Struct { p: 42_u32 });
     item.method();
     //~^ ERROR no method named `method` found for union `MaybeUninit` in the current scope [E0599]
-    //~| HELP if this `MaybeUninit::<Struct<u32>>` has been initialized, use one of the `assume_init` methods to access the inner value
+    //~| HELP if this `MaybeUninit<Struct<u32>>` has been initialized, use one of the `assume_init` methods to access the inner value
 }

src/test/ui/suggestions/inner_type2.stderr

@@ -17,7 +17,7 @@ error[E0599]: no method named `method` found for union `MaybeUninit` in the curr
 LL |     item.method();
    |          ^^^^^^ method not found in `MaybeUninit<Struct<u32>>`
    |
-   = help: if this `MaybeUninit::<Struct<u32>>` has been initialized, use one of the `assume_init` methods to access the inner value
+   = help: if this `MaybeUninit<Struct<u32>>` has been initialized, use one of the `assume_init` methods to access the inner value
 note: the method `method` exists on the type `Struct<u32>`
   --> $DIR/inner_type2.rs:6:5
    |