Point to the Java 8 Javadocs.

Author: Gary Gregory

pom.xml

@@ -146,6 +146,7 @@ CSV files of various types.
     <project.inceptionYear>2005</project.inceptionYear>
     <maven.compiler.source>1.8</maven.compiler.source>
     <maven.compiler.target>1.8</maven.compiler.target>
+    <commons.javadoc.java.link>http://docs.oracle.com/javase/8/docs/api/</commons.javadoc.java.link>
     <!-- Ensure copies work OK (can be removed later when this is in parent POM) -->
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>