fixed meta info

change tag to datum

UWLecturePlan/Views/Lecture/Index.cshtml

@@ -35,7 +35,7 @@
                     </select>
                 </div>
                 <div class="order-1  col-6 col-sm-3 col-md-3 col-lg-2 col-xl-2 col-xxl-2">
-                    <label for="Date" class="form-label">Tag:</label>
+                    <label for="Date" class="form-label">Datum:</label>
                     <select asp-for="Date" class="form-select">
                         @foreach (var day in Model.Days)
                         {

UWLecturePlan/Views/Shared/_Layout.cshtml

@@ -12,15 +12,22 @@
     <meta property="og:type" content="website" />
     <meta property="og:url" content="https://uniforall.nihil.foo/" />
     <meta property="og:title" content="UniForAll" />
-    <meta property="og:description" content="" />
+    <meta property="og:description" content="Stundenplan für Gasthörer und Studierende" />
+    <meta property="og:type" content="article">
     <meta property="og:image" content="https://uniforall.nihil.foo/images/ufalogobig.png" />    
-
+    <meta property="og:image:secure_url" content="https://uniforall.nihil.foo/images/ufalogobig.png" />
+    <meta property="og:image:type" content="image/png">
+    <meta property="og:image:width" content="1200">
+    <meta property="og:image:height" content="628">
     <!-- Twitter -->
     <meta property="twitter:card" content="summary_large_image" />
     <meta property="twitter:url" content="https://uniforall.nihil.foo/" />
     <meta property="twitter:title" content="UniForAll" />
     <meta property="twitter:description" content="Stundenplan für Gasthörer und Studierende" />
     <meta property="twitter:image" content="https://uniforall.nihil.foo/images/ufalogobig.png" />
+    <meta property="twitter:image:src" content="https://uniforall.nihil.foo/images/ufalogobig.png" />
+
+    <!-- Meta Tags Generated with https://metatags.io -->
 
     <link rel="stylesheet" href="~/lib/bootstrap/dist/css/bootstrap.min.css" />
     <link rel="stylesheet" href="~/css/site.css" asp-append-version="true" />