storage: docs for prefixes - googleapis#491

Author: stephenplusplus

lib/storage/bucket.js

@@ -334,8 +334,8 @@ Bucket.prototype.file = function(name, options) {
  * @param {string} query.delimiter - Results will contain only objects whose
  *     names, aside from the prefix, do not contain delimiter. Objects whose
  *     names, aside from the prefix, contain delimiter will have their name
- *     truncated after the delimiter, returned in prefixes. Duplicate prefixes
- *     are omitted.
+ *     truncated after the delimiter, returned in `apiResponse.prefixes`.
+ *     Duplicate prefixes are omitted.
  * @param {string} query.prefix - Filter results to objects whose names begin
  *     with this prefix.
  * @param {number} query.maxResults - Maximum number of items plus prefixes to