changed into_iter to iter and fixed a lint check

Author: Zaechus

clippy_lints/src/literal_representation.rs

@@ -229,20 +229,20 @@ impl<'a> DigitInfo<'a> {
                 None => String::new(),
             };
             format!("{}.{}{}", int_part_hint, frac_part_hint, suffix_hint)
-        } else if self.float && (self.digits.contains('E') || self.digits.contains('E')) {
+        } else if self.float && (self.digits.contains('E') || self.digits.contains('e')) {
             let which_e = if self.digits.contains('E') { 'E' } else { 'e' };
             let parts: Vec<&str> = self.digits.split(which_e).collect();
             let filtered_digits_vec_0 = parts[0].chars().filter(|&c| c != '_').rev().collect::<Vec<_>>();
             let filtered_digits_vec_1 = parts[1].chars().filter(|&c| c != '_').rev().collect::<Vec<_>>();
             let before_e_hint = filtered_digits_vec_0
                 .chunks(group_size)
-                .map(|chunk| chunk.into_iter().rev().collect())
+                .map(|chunk| chunk.iter().rev().collect())
                 .rev()
                 .collect::<Vec<String>>()
                 .join("_");
             let after_e_hint = filtered_digits_vec_1
                 .chunks(group_size)
-                .map(|chunk| chunk.into_iter().rev().collect())
+                .map(|chunk| chunk.iter().rev().collect())
                 .rev()
                 .collect::<Vec<String>>()
                 .join("_");