Revert "Fix README footer year"

tknguyn112 · tknguyn112 · commit 2f27b855671b · 2026-07-17T12:53:37.000+07:00
This reverts commit 51dd748.
diff --git a/README.md b/README.md
@@ -13,4 +13,4 @@ Output
    simple interest = p*t*r
 ```
 
-_© 2023 XYZ, Inc._
+_© 2022 XYZ, Inc._
