fix: some fixes

.gitignore

@@ -1,6 +1,7 @@
 input.txt
 2025/debug
 2025/target
+2025/inputs/*.txt
 
 # These are backup files generated by rustfmt
 **/*.rs.bk

2025/inputs/day01.txt

@@ -1 +0,0 @@
-test input

2025/src/utils.rs

@@ -1,6 +1,6 @@
 use std::fs;
 
 pub fn read_input(day: u8) -> String {
-    let path = format!("inputs/day{:02}.txt", day);
+    let path = format!("inputs/{:02}.txt", day);
     fs::read_to_string(&path).unwrap_or_else(|_| panic!("Could not read file: {}", path))
 }