chore: fix prompt error

Missed a blank line, which causes the prompt incorrect like below:

```rust
You can keep working on this exercise,
or jump into the next one by removing the `I AM NOT DONE` comment:

 6 |  // Make this code compile by using the proper Rc primitives to express that the sun has multiple owners.
 7 |  
 8 |  // I AM NOT DONE
 9 |  use std::rc::Rc;
```
This commit is contained in:
Kevin Wan 2023-01-23 12:16:51 +08:00 committed by GitHub
parent 259b434f20
commit 4771a7b9e7
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@ -6,6 +6,7 @@
// Make this code compile by using the proper Rc primitives to express that the sun has multiple owners.
// I AM NOT DONE
use std::rc::Rc;
#[derive(Debug)]