move_semantics5: Move main to the end

exercises/06_move_semantics/move_semantics5.rs

@@ -3,14 +3,6 @@
 // TODO: Fix the compiler errors without changing anything except adding or
 // removing references (the character `&`).
 
-fn main() {
-    let data = "Rust is great!".to_string();
-
-    get_char(data);
-
-    string_uppercase(&data);
-}
-
 // Shouldn't take ownership
 fn get_char(data: String) -> char {
     data.chars().last().unwrap()
@@ -22,3 +14,11 @@ fn string_uppercase(mut data: &String) {
 
     println!("{data}");
 }
+
+fn main() {
+    let data = "Rust is great!".to_string();
+
+    get_char(data);
+
+    string_uppercase(&data);
+}