simple typo

src/main.rs

@@ -45,7 +45,7 @@ fn parse_config(conf: String, pool: &mut Vec<robot::Robot>) -> Result<world::Wor
         Ok(x) => x,
         Err(err) => return Err("Could not convert token two from the first string to i32"),
     };
-    Ok(world::World { x: x, y: y })
+    Ok(world::World { x, y })
 }
 
 /// Retrieve the content of a file and return it as a string.