Update source code links.

They were previously all pointing to diagnostics.

Author: khalidabuhakmeh

src/Pages/Index.cshtml

@@ -55,7 +55,7 @@
                 </p>
             </div>
             <div class="card-footer p-0">
-                <a href="/.well-known/openid-configuration" class="btn btn-primary w-100 rounded-bottom">
+                <a href="/.well-known/openid-configuration" class="btn btn-primary w-100">
                     Go
                     <i class="glyphicon glyphicon-chevron-right"></i>
                 </a>
@@ -70,7 +70,7 @@
                 <p class="card-text">See the claims for your current session.</p>
             </div>
             <div class="card-footer p-0">
-                <a href="/diagnostics/" class="btn btn-primary w-100 rounded-bottom">
+                <a href="/diagnostics/" class="btn btn-primary w-100">
                     Go
                     <i class="glyphicon glyphicon-chevron-right"></i>
                 </a>
@@ -85,7 +85,7 @@
                 <p class="card-text">Manage your stored grants.</p>
             </div>
             <div class="card-footer p-0">
-                <a href="/grants/" class="btn btn-primary w-100 rounded-bottom">
+                <a href="/grants/" class="btn btn-primary w-100">
                     Go
                     <i class="glyphicon glyphicon-chevron-right"></i>
                 </a>
@@ -100,7 +100,7 @@
                 <p class="card-text">View your pending Client-Initiated Backchannel Authentication (CIBA) login requests.</p>
             </div>
             <div class="card-footer p-0">
-                <a href="/ciba/all/" class="btn btn-primary w-100 rounded-bottom">
+                <a href="/ciba/all/" class="btn btn-primary w-100">
                     Go
                     <i class="glyphicon glyphicon-chevron-right"></i>
                 </a>
@@ -122,7 +122,7 @@
                 </p>
             </div>
             <div class="card-footer p-0">
-                <a href="https://github.com/duendesoftware/products" class="btn btn-primary w-100 rounded-bottom">
+                <a href="https://github.com/duendesoftware/products" class="btn btn-primary w-100">
                     Source Code
                     <i class="glyphicon glyphicon-download-alt"></i>
                 </a>
@@ -137,7 +137,7 @@
                 <p class="card-text">Ready-to-use IdentityServer samples for .NET and ASP.NET Core</p>
             </div>
             <div class="card-footer p-0">
-                <a href="/diagnostics/" class="btn btn-primary w-100 rounded-bottom">
+                <a href="https://github.com/DuendeSoftware/Samples/" class="btn btn-primary w-100">
                     Source Code
                     <i class="glyphicon glyphicon-download-alt"></i>
                 </a>
@@ -152,7 +152,7 @@
                 <p class="card-text">The source code for this demo server.</p>
             </div>
             <div class="card-footer p-0">
-                <a href="/diagnostics/" class="btn btn-primary w-100 rounded-bottom">
+                <a href="https://github.com/DuendeSoftware/demo.duendesoftware.com" class="btn btn-primary w-100">
                     Source Code
                     <i class="glyphicon glyphicon-download-alt"></i>
                 </a>