Fix issues masastack#129 (masastack#153)

Author: JeremyWu917

Masa.Blazor.Pro/Pages/App/ECommerce/Order/Cart.razor

@@ -72,7 +72,7 @@
                     </MListItem>
                     <MListItem>
                         <MListItemTitle class="text-caption">Discount</MListItemTitle>
-                        <MListItemTitle class="text-right text-btn neutral-lighten-1--text"> -25$ </MListItemTitle>
+                        <MListItemTitle class="text-right text-btn neutral-lighten-1--text"> $-25 </MListItemTitle>
                     </MListItem>
                     <MListItem>
                         <MListItemTitle class="text-caption">EstimatedTax</MListItemTitle>