Work around Java 8's javadoc bug

Author: fge

project.gradle

@@ -51,9 +51,9 @@ dependencies {
 /*
  * External javadoc links
  */
-javadoc.options.links("http://docs.oracle.com/javase/6/docs/api");
-javadoc.options.links("http://jsr-305.googlecode.com/svn/trunk/javadoc");
-javadoc.options.links("http://fasterxml.github.com/jackson-databind/javadoc/2.2.0");
-javadoc.options.links("http://docs.guava-libraries.googlecode.com/git-history/v16.0.1/javadoc");
-javadoc.options.links("http://fge.github.io/msg-simple");
+javadoc.options.links("http://docs.oracle.com/javase/6/docs/api/");
+javadoc.options.links("http://jsr-305.googlecode.com/svn/trunk/javadoc/");
+javadoc.options.links("http://fasterxml.github.com/jackson-databind/javadoc/2.2.0/");
+javadoc.options.links("http://docs.guava-libraries.googlecode.com/git-history/v16.0.1/javadoc/");
+javadoc.options.links("http://fge.github.io/msg-simple/");