fix canonical url and application-url

index.html

@@ -6,7 +6,7 @@
     <meta name="viewport" content="width=device-width, initial-scale=1">
     <meta name="application-name" content="Tinode">
     <meta name="description" content="Instant messaging">
-    <meta name="application-url" content="https://api.tinode.co/x/">
+    <meta name="application-url" content="https://api.tinode.co/">
     <!-- Browser styling for Chrome, FF, Opera -->
     <meta name="theme-color" content="#3949AB">
     <!-- Ask Google not to offer page translation -->
@@ -15,7 +15,7 @@
     <link rel="manifest" href="manifest.json">
     <link id="shortcut-icon" rel="shortcut icon" href="img/logo32x32.png" type="image/png" />
     <link rel="apple-touch-icon" sizes="192x192" href="img/logo192.png" type="image/png" />
-    <link rel="canonical" href="https://api.tinode.co/x/"/>
+    <link rel="canonical" href="https://api.tinode.co/" />
     <!-- Google's Roboto font -->
     <link href="https://fonts.googleapis.com/css?family=Roboto:300,400,400italic,500,700&subset=latin,cyrillic"
       rel="stylesheet" type="text/css" />