update zip docs.

lib/plugins/zip.js

@@ -16,6 +16,7 @@ var util = require('archiver-utils');
  * @param {Boolean} [options.forceZip64=false] Forces the archive to contain ZIP64 headers.
  * @param {Boolean} [options.store=false] Sets the compression method to STORE.
  * @param {Object} [options.zlib] Passed to [zlib]{@link https://nodejs.org/api/zlib.html#zlib_class_options}
+ * @property {ZipStream} [engine]
  */
 var Zip = function(options) {
   if (!(this instanceof Zip)) {
@@ -83,16 +84,18 @@ Zip.prototype.unpipe = function() {
 
 module.exports = Zip;
 
+
+
 /**
  * @typedef {Object} ZipOptions
  * @global
  * @property {String} [comment] Sets the zip archive comment.
- * @param {Boolean} [forceLocalTime=false] Forces the archive to contain local file times instead of UTC.
- * @param {Boolean} [forceZip64=false] Forces the archive to contain ZIP64 headers.
+ * @property {Boolean} [forceLocalTime=false] Forces the archive to contain local file times instead of UTC.
+ * @property {Boolean} [forceZip64=false] Forces the archive to contain ZIP64 headers.
  * @property {Boolean} [store=false] Sets the compression method to STORE.
  * @property {Object} [zlib] Passed to [zlib]{@link https://nodejs.org/api/zlib.html#zlib_class_options}
  * to control compression.
- * @property {*} [*] See [zip-stream]{@link https://archiverjs.com/zip-stream/ZipStream.html} documentation for additional properties.
+ * @property {*} [*] See [zip-stream]{@link } documentation for current list of properties.
  */
 
 /**
@@ -106,4 +109,10 @@ module.exports = Zip;
  * @property {fs.Stats} [stats] Sets the fs stat data for this entry allowing
  * for reduction of fs stat calls when stat data is already known.
  * @property {Boolean} [store=ZipOptions.store] Sets the compression method to STORE.
+ */
+
+/**
+ * ZipStream
+ * @external ZipStream
+ * @see {@link https://archiverjs.com/zip-stream/ZipStream.html}
  */