Update documentation of Java platform requirement

Author: garydgregory

src/site/xdoc/index.xml

@@ -102,7 +102,7 @@ Bean Collections has an additional dependency on
 <subsection name="2.0.x releases">
   <p>
     BeanUtils <strong>2.0.x</strong> releases are not binary compatible (but easy to port) with version 1.x.x and require a minimum of
-    JDK 1.7.
+    Java 8.
   </p>
   <p>
     The latest BeanUtils release is available to download