docs exercise

exercise/idiomatic/src/main.rs

@@ -8,7 +8,7 @@
 // Challenge: Clippy doesn't find *everything*. What else would you change to make this code better?
 
 const pi:f32=3.14159265358979323846;
-fn count_to_5()->i32{let mut foo =(0);loop{if{foo>pi as i32}{if(foo > 5){break;}}foo=foo+1;}return 5;}
+fn count_to_5()->i32{let mut foo =0;loop{if foo>pi as i32{if foo > 5{break;}}foo=foo+1;}return 5;}
 fn main() {
 println!("I can count to {}", count_to_5());
 }