Revert "Fixed a typo for the year"

This reverts commit 405c652.

Revert past typo fix

Author: Izzy-Dee

README.md

@@ -13,4 +13,4 @@ Output
    simple interest = p*t*r
 ```
 
-_© 2023 XYZ, Inc._
+_© 2022 XYZ, Inc._