improvements in API docs generation

src/services/import/opml.js

@@ -9,7 +9,7 @@ const htmlSanitizer = require('../html_sanitizer');
  * @param {TaskContext} taskContext
  * @param {Buffer} fileBuffer
  * @param {BNote} parentNote
- * @return {Promise<*[]|*>}
+ * @returns {Promise<*[]|*>}
  */
 async function importOpml(taskContext, fileBuffer, parentNote) {
     const xml = await new Promise(function(resolve, reject)

src/services/import/zip.js

@@ -19,7 +19,7 @@ const becca = require("../../becca/becca");
  * @param {TaskContext} taskContext
  * @param {Buffer} fileBuffer
  * @param {BNote} importRootNote
- * @return {Promise<*>}
+ * @returns {Promise<*>}
  */
 async function importZip(taskContext, fileBuffer, importRootNote) {
     // maps from original noteId (in ZIP file) to newly generated noteId