[mirotalksfu] - fix typo

app/src/lib/nodemailer.js

@@ -1,4 +1,4 @@
-'use-strict';
+'use strict';
 
 const nodemailer = require('nodemailer');
 const config = require('../config');

public/js/LocalStorage.js

@@ -1,4 +1,4 @@
-'use-strict';
+'use strict';
 
 class LocalStorage {
     constructor() {

public/js/Rules.js

@@ -1,4 +1,4 @@
-'use-strict';
+'use strict';
 
 let isPresenter = false;