[mirotalksfu] - fix typo

public/js/Umami.js

@@ -1,3 +1,5 @@
+'use strict';
+
 // https://github.com/mikecao/umami
 
 const script = document.createElement('script');

public/js/newRoom.js

@@ -1,6 +1,6 @@
 'use strict';
 
-let adjectives = [
+const adjectives = [
     'small',
     'big',
     'large',
@@ -54,7 +54,7 @@ let adjectives = [
     'smart',
 ];
 
-let nouns = [
+const nouns = [
     'dog',
     'bat',
     'wrench',