8256167: Convert JDK use of Reference::get to Reference::refersTo

Reviewed-by: sspitsyn, shade, dfuchs, alanb, kbarrett

src/java.base/share/classes/java/lang/ref/Reference.java

@@ -337,7 +337,7 @@ public abstract class Reference<T> {
      *
      * @return   The object to which this reference refers, or
      *           {@code null} if this reference object has been cleared
-     * @see refersTo
+     * @see #refersTo
      */
     @IntrinsicCandidate
     public T get() {