Fix group not being shown on script instance details

Author: kkthxbye-code

netbox_script_manager/templates/netbox_script_manager/scriptinstance.html

@@ -86,7 +86,7 @@ <h5 class="card-header">Script Instance</h5>
             </tr>
             <tr>
               <th scope="row">Group</th>
-              <td>{{ object.Group|placeholder }}</td>
+              <td>{{ object.group|placeholder }}</td>
             </tr>
             <tr>
               <th scope="row">Tenant</th>