Merge pull request #1673 from husjon/fix-enums3-formatting

Fixed formatting of `enums3` with rustfmt

exercises/enums/enums3.rs

@@ -20,7 +20,7 @@ struct State {
     color: (u8, u8, u8),
     position: Point,
     quit: bool,
-    message: String
+    message: String,
 }
 
 impl State {
@@ -32,7 +32,9 @@ impl State {
         self.quit = true;
     }
 
-    fn echo(&mut self, s: String) { self.message = s }
+    fn echo(&mut self, s: String) {
+        self.message = s
+    }
 
     fn move_position(&mut self, p: Point) {
         self.position = p;