Update index html to insert some meta

index.html

@@ -6,8 +6,11 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0, shrink-to-fit=no" >
     <title>Calendar - Vue3</title>
     <meta name="description" content="This is a Vue 3 application that showcases usage of fullcalendar for tutorial purposes.">
+    <meta name="keywords" content="vue, fullcalendar, tutorial, example, composition API">
 
     <meta property="og:title" content="Vue3 - fullcalendar app">
+    <meta property="og:site_name" content="Vue3 - fullcalendar app">
+    <meta property="og:type" content="website">
     <meta property="og:description" content="This is a Vue 3 application that showcases usage of fullcalendar for tutorial purposes.">
     <meta property="og:image" content="https://yshgroup.github.io/vue3-fullcalendar-bootstrap/src/assets/calendar-204x192.png">
     <meta property="og:url" content="https://yshgroup.github.io/vue3-fullcalendar-bootstrap/">