JDK 13 RFR of JDK-8225675: Outdated citation of JLS in java.lang.ref.Reference

[Joe Darcy]

Hello,

Please review the small patch below to address
    JDK-8225675: Outdated citation of JLS in java.lang.ref.Reference

(I'll reflow the paragraph before pushing; wanted to make the nature of 
the diff clearer in the review.)

Thanks,

-Joe

diff -r 1224b16c8ff4 
src/java.base/share/classes/java/lang/ref/Reference.java
--- a/src/java.base/share/classes/java/lang/ref/Reference.java Wed Jun 
12 12:31:32 2019 -0700
+++ b/src/java.base/share/classes/java/lang/ref/Reference.java Wed Jun 
12 13:30:43 2019 -0700
@@ -419,8 +419,8 @@
      * facilities are not possible or do not provide the desired 
control.  This
      * method is applicable only when reclamation may have visible 
effects,
      * which is possible for objects with finalizers (See
-     * <a 
href="https://docs.oracle.com/javase/specs/jls/se8/html/jls-12.html#jls-12.6";>
-     * Section 12.6 17 of <cite>The Java&trade; Language 
Specification</cite></a>)
+     * Section 12.6 of <cite>The Java&trade; Language
+     * Specification</cite>)
      * that are implemented in ways that rely on ordering control for 
correctness.
      *
      * @apiNote
@@ -508,6 +508,7 @@
      *
      * @param ref the reference. If {@code null}, this method has no 
effect.
      * @since 9
+     * @jls 12.6 Finalization of Class Instances
      */
     @ForceInline
     public static void reachabilityFence(Object ref) {