fix: change the icon of the Acknowledgement (#5630)

* fix: change the icon of the Acknowledgement

* Fix: change the icon of the acknowledgement

* fix: change the icon of the acknowledgement

Author: Raunaksingh100

app/templates/components/forms/orders/order-form.hbs

@@ -275,7 +275,7 @@
               @readonly="" />          {{/if}}        </div>
       {{/if}}
       <h4 class="ui horizontal divider header">
-        <i class="ticket icon"></i>
+        <i class="tasks icon"></i>
         {{t 'Acknowledgement'}}
       </h4>
       <p>