modified footer in README.md

Paweł Baczyński · Paweł Baczyński · commit 128571c66987 · 2024-11-25T20:04:49.000+01:00
diff --git a/README.md b/README.md
@@ -13,4 +13,4 @@ Output
    simple interest = p*t*r
 ```
 
-_© 2022 XYZ, Inc._
+_2023 XYZ, Inc._
