rename input files

src/bin/day06_1.rs

@@ -2,6 +2,6 @@ use aoc2022::day06::process_part_1;
 use std::fs;
 
 fn main() {
-    let file = fs::read_to_string("./inputs/day6.txt").unwrap();
+    let file = fs::read_to_string("./inputs/day06.txt").unwrap();
     println!("{}", process_part_1(&file));
 }