Rename copying.ts to copyingSample.ts

Author: ewdlop

copying.ts renamed to copyingSample.ts

@@ -6,4 +6,4 @@
     const numbers = [1, 2, 3];
     const updatedNumbers = [...numbers.slice(0, 1), 4, ...numbers.slice(2)];
     const updatedNumbers2 = numbers.map((n, i) => i === 1 ? 4 : n);
-}
+}