specs/jni/function.html has the one remaining reference in the specs directory to an earlier version of JLS.

build/linux-x86_64-server-release/images/docs/specs/jni/functions.html:"http://docs.oracle.com/javase/specs/jls/se13/html/jls-12.html#jls-12.6.1"

 find closed/src/java.se/ -name functions.md | xargs grep se13
§12.6.1](http://docs.oracle.com/javase/specs/jls/se13/html/jls-12.html#jls-12.6.1))

I suggest changing "se13" to "se@@VERSION_SPECIFICATION@@" so that it always refers to the appropriate corresponding version of JLS. (Support for @@VERSION_SPECIFICATION@@ was added in JDK-8227644)