JavaHL docstring typosuction.

* subversion/bindings/javahl/native/Utility.hpp
  (JavaHL::Util::make_property_hash): Fix argument name in docstring.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1545930 13f79535-47bb-0310-9956-ffa450edef68