storage: updated documentation for PR googleapis#824

This properly documents the new events for read and write streams.

lib/storage/file.js

@@ -353,7 +353,7 @@ File.prototype.move = function(destination, callback) {
  * "CONTENT_DOWNLOAD_MISMATCH". If you receive this error, the best recourse is
  * to try downloading the file again.
  *
- * NOTE: Readable streams will emit the `complete` event when the file is fully
+ * NOTE: Readable streams will emit the `end` event when the file is fully
  * downloaded.
  *
  * @param {object=} options - Configuration object.
@@ -622,7 +622,7 @@ File.prototype.createResumableUpload = function(metadata, callback) {
  * Resumable uploads are automatically enabled and must be shut off explicitly
  * by setting `options.resumable` to `false`.
  *
- * NOTE: Writable streams will emit the `complete` event when the file is fully
+ * NOTE: Writable streams will emit the `finish` event when the file is fully
  * uploaded.
  *
  * @resource [Upload Options (Simple or Resumable)]{@link https://cloud.google.com/storage/docs/json_api/v1/how-tos/upload#uploads}