Fix JDK8 doclint range to work with JDK7

When attempting to compile bitcoinj (and Orchid) on JDK7 (1.7.0_21) within Intellij I see POM parse errors due to an unbounded range. 

The [original StackOverflow answer to this was modified](http://stackoverflow.com/questions/15886209/maven-is-not-working-in-java-8-when-javadoc-tags-are-incomplete/22296107#22296107) to accommodate the closing bracket for the range.