Updated the file destructure_tuple.md

Fixed a small grammar mistake.

Author: Abdullah8006

src/flow_control/match/destructuring/destructure_tuple.md

@@ -13,7 +13,7 @@ fn main() {
         // Destructure the second and third elements
         (0, y, z) => println!("First is `0`, `y` is {:?}, and `z` is {:?}", y, z),
         (1, ..)  => println!("First is `1` and the rest doesn't matter"),
-        // `..` can be the used ignore the rest of the tuple
+        // `..` can be used to ignore the rest of the tuple
         _      => println!("It doesn't matter what they are"),
         // `_` means don't bind the value to a variable
     }