Update README.md

Author: bishabosha

README.md

@@ -6,6 +6,8 @@ An enhanced glob interpolator for Scala with format strings
 
 read full usage [in the documentation](https://javadoc.io/doc/io.github.bishabosha/enhanced-string-interpolator_3), or the original inspiration in my [blog post](https://bishabosha.github.io/articles/simple-parsing-with-strings.html)
 
+> Note that JDK 17+ is required
+
 ## Basic usage
 
 ```scala