Updated README.md
Updated link title in README from 'Sealed Classes and Interfaces in Java 17' to 'Sealed Classes and Interfaces in Java'
- [Introduction to HexFormat in Java 17](https://www.baeldung.com/java-hexformat)
- [New Features in Java 17](https://www.baeldung.com/java-17-new-features)
- [Random Number Generators in Java 17](https://www.baeldung.com/java-17-random-number-generators)
-- [Sealed Classes and Interfaces in Java 17](https://www.baeldung.com/java-sealed-classes-interfaces)
+- [Sealed Classes and Interfaces in Java](https://www.baeldung.com/java-sealed-classes-interfaces)
