Update button text in Index.cshtml for brevity

Author: sven-pohl

src/Application/src/RazorPagesTestSample/Pages/Index.cshtml

@@ -21,8 +21,7 @@
                         <span asp-validation-for="Message.Text" class="text-danger"></span>
                     </div>
                     <div class="form-group">
-                        <button type="submit" asp-page-handler="AddMessage" class="btn btn-default">Add a
-                            Message</button>
+                        <button type="submit" asp-page-handler="AddMessage" class="btn btn-default">Add Message</button>
                     </div>
                 </div>
             </div>