jsdoc bugs fixed

Author: tgoldina

src/firefly/js/api/ApiViewer.js

@@ -50,7 +50,7 @@ let defaultViewerType=ViewerType.TriView;
 
 
 /**
- * @returns {{getViewer: getViewer, getExternalViewer: getExternalViewer}}
+ * @returns {{getViewer: function, getExternalViewer: function}}
  * @ignore
  */
 export function buildViewerApi() {
@@ -98,7 +98,7 @@ export function getViewer(channel= getWsChannel(),file=defaultViewerFile) {
     const viewer= Object.assign({dispatch, reinitViewer, channel},
         buildImagePart(channel,file,dispatch),
         buildTablePart(channel,file,dispatch),
-        buildChartPart(channel,file,dispatch),
+        buildChartPart(channel,file,dispatch)
     );
 
 

src/firefly/js/core/background/BackgroundUtil.js

@@ -20,14 +20,15 @@ export function getBackgroundInfo() {
 
 /**
  * returns an array of all background jobs.
- * @returns [string]
+ * @returns {Array.<string>}
  */
 export function getBackgroundJobs() {
     return get(flux.getState(), [BACKGROUND_PATH, 'jobs']);
 }
 
 /**
  * returns background status for the given id.
+ * @param id
  * @returns {BgStatus}
  */
 export function getBgStatusById(id) {
@@ -44,7 +45,7 @@ export function getBgEmail() {
 
 /**
  * returns the email related info.  Currently, it's email and enableEmail.
- * @returns {object.<string, }
+ * @returns {object.<string>}
  */
 export function getBgEmailInfo() {
     let {email, enableEmail} =  get(flux.getState(), BACKGROUND_PATH) || {};