Harmonize module and input naming

src/year_2023/day_01_trebuchet/part_one.rs

@@ -1,7 +1,7 @@
 use crate::utils::input_reader;
 
 pub fn part_one() {
-    if let Ok(lines) = input_reader::read_lines("./input.txt") {
+    if let Ok(lines) = input_reader::read_lines("./input/input.txt") {
         let mut result = 0;
 
         for line in lines {