fix: add missing line breaks to scaffold template

src/bin/scaffold.rs

@@ -19,12 +19,14 @@ fn main() {
 #[cfg(test)]
 mod tests {
     use super::*;
+
     #[test]
     fn test_part_one() {
         use aoc::read_file;
         let input = read_file("examples", DAY);
         assert_eq!(part_one(&input), 0);
     }
+
     #[test]
     fn test_part_two() {
         use aoc::read_file;