update to https ogp url

public/index.html

@@ -7,10 +7,10 @@
     <meta name="keywords" content="MakeGirls.moe, makegirlsmoe, Deep learning, AI, Artificial intelligence, GAN, Generative adversarial networks, DCGAN, Conditional DCGAN, DRAGAN, ACGAN, WebDNN, Girl illustrations, Face generator, Avatar, Anime, Anime Face, Game, Girls">
     <meta name="description" content="MakeGirlsMoe - Create Anime Characters with A.I.! Automatically generate an anime character with your customization. You can specify some attributes such as blonde hair, twin tail, smile, etc."/>
     <meta name="twitter:card" content="summary" />
-    <meta property="og:url" content="http://make.girls.moe" />
+    <meta property="og:url" content="https://make.girls.moe" />
     <meta property="og:title" content="MakeGirlsMoe" />
     <meta property="og:description" content="Create Anime Characters with A.I.!" />
-    <meta property="og:image" content="http://make.girls.moe/thumb.png" />
+    <meta property="og:image" content="https://make.girls.moe/thumb.png" />
 
     <!--
       manifest.json provides metadata used when your web app is added to the