Merge pull request #1506 from amnabibi786/patch-8

Update README.md

Author: lor6

scala-core-modules/scala-core-numbers/README.md

@@ -6,3 +6,4 @@
 - [Find Factorial of a Number in Scala](https://www.baeldung.com/scala/find-factorial)
 - [Check if a Number Is a Power of Two in Scala](https://www.baeldung.com/scala/check-power-of-two)
 - [Get the Individual Digits of a Number in Scala](https://www.baeldung.com/scala/number-extract-digits)
+- [Convert a Number to Roman Numeral in Scala](https://www.baeldung.com/scala/convert-number-roman)