Added back placeholder for name

Author: jrmccannon

src/AdminConsole/Pages/Organization/Join.cshtml

@@ -22,7 +22,7 @@ else
                 <div>
                     <label asp-for="Form.Name" class="block text-sm font-medium leading-6 text-gray-900">Admin Name</label>
                     <div class="mt-2">
-                        <input type="text" asp-for="Form.Name" class="text-input">
+                        <input placeholder="Philip J. Fry" type="text" asp-for="Form.Name" class="text-input">
                         <span asp-validation-for="Form.Name"></span>
                     </div>
                 </div>