chore: Run rustfmt on exercises

exercises/conversions/from_str.rs

@@ -82,5 +82,4 @@ mod tests {
     fn missing_name_and_invalid_age() {
         ",one".parse::<Person>().unwrap();
     }
-
 }

exercises/conversions/try_from_into.rs

@@ -2,7 +2,7 @@
 // Basically, this is the same as From. The main difference is that this should return a Result type
 // instead of the target type itself.
 // You can read more about it at https://doc.rust-lang.org/std/convert/trait.TryFrom.html
-use std::convert::{TryInto, TryFrom};
+use std::convert::{TryFrom, TryInto};
 
 #[derive(Debug)]
 struct Color {

exercises/conversions/using_as.rs

@@ -7,9 +7,7 @@
 // I AM NOT DONE
 
 fn average(values: &[f64]) -> f64 {
-    let total = values
-        .iter()
-        .fold(0.0, |a, b| a + b);
+    let total = values.iter().fold(0.0, |a, b| a + b);
     total / values.len()
 }