Fix error code tests for now

Author: rylev

compiler/rustc_error_codes/src/error_codes/E0782.md

@@ -6,7 +6,7 @@ runtime but conform to some trait.
 In the following code the trait object should be formed with
 `Box<dyn Foo>`, but `dyn` is left off.
 
-```compile_fail,E0782
+```no_run
 trait Foo {}
 fn test(arg: Box<Foo>) {}
 ```

compiler/rustc_error_codes/src/error_codes/E0783.md

@@ -5,11 +5,11 @@ ranges which are now signified using `..=`.
 
 The following code use to compile, but now it now longer does.
 
-```compile_fail,E0783
+```no_run
 fn main() {
     let n = 2u8;
     match n {
-        ...9 => println!("Got a number less than 10),
+        ...9 => println!("Got a number less than 10"),
         _ => println!("Got a number 10 or more")
     }
 }