rename input files

src/bin/day07_2.rs

@@ -3,6 +3,6 @@ use std::fs;
 use aoc2022::day07::process_part_2;
 
 fn main() {
-    let file = fs::read_to_string("./inputs/day7.txt").unwrap();
+    let file = fs::read_to_string("./inputs/day07.txt").unwrap();
     println!("{}", process_part_2(&file));
 }