Silence warnings, run cargo fmt

crates/chattyness-shared/src/validation.rs

@@ -160,7 +160,12 @@ pub fn validate_non_empty(value: &str, field_name: &str) -> Result<(), AppError>
 /// # Returns
 /// - `Ok(())` if length is within bounds
 /// - `Err(AppError::Validation)` if too short or too long
-pub fn validate_length(value: &str, field_name: &str, min: usize, max: usize) -> Result<(), AppError> {
+pub fn validate_length(
+    value: &str,
+    field_name: &str,
+    min: usize,
+    max: usize,
+) -> Result<(), AppError> {
     let len = value.len();
     if len < min || len > max {
         return Err(AppError::Validation(format!(