RFR: XS,docs JDK-8225314 broken links in java.base

[Jonathan Gibbons]

Please review a small fix for a couple of broken links in java.base.

Both look like the same copy/paste error, trying to refer to a target id 
in another package.

No webrev: patch below.

-- Jon

JBS: https://bugs.openjdk.java.net/browse/JDK-8225314


$ hg diff -R open
diff -r 64fe51ee940e src/java.base/share/classes/java/lang/Enum.java
--- a/src/java.base/share/classes/java/lang/Enum.java   Tue Jun 04 
14:47:25 2019 -0700
+++ b/src/java.base/share/classes/java/lang/Enum.java   Tue Jun 04 
15:17:48 2019 -0700
@@ -283,7 +283,7 @@
      }

      /**
-     * A <a href="package-summary.html#nominal">nominal descriptor</a> 
for an
+     * A <a 
href="{@docRoot}/java.base/java/lang/constant/package-summary.html#nominal">nominal 
descriptor</a> for an
       * {@code enum} constant.
       *
       * @param <E> the type of the enum constant
diff -r 64fe51ee940e 
src/java.base/share/classes/java/lang/invoke/VarHandle.java
--- a/src/java.base/share/classes/java/lang/invoke/VarHandle.java Tue 
Jun 04 14:47:25 2019 -0700
+++ b/src/java.base/share/classes/java/lang/invoke/VarHandle.java Tue 
Jun 04 15:17:48 2019 -0700
@@ -2118,7 +2118,7 @@
      }

      /**
-     * A <a href="package-summary.html#nominal">nominal descriptor</a> 
for a
+     * A <a 
href="{@docRoot}/java.base/java/lang/constant/package-summary.html#nominal">nominal 
descriptor</a> for a
       * {@link VarHandle} constant.
       *
       * @since 12