Clarify order of operations in totalPrice calculation

The code change in the `HandleBurgersAsync` method of the `CafeController`
class modifies the calculation of the `totalPrice` variable. The original
calculation `burgers * burgerPrice + (drink ? drinkPrice : 0)` has been
updated to include parentheses around the burger price calculation:
`(burgers * burgerPrice) + (drink ? drinkPrice : 0)`. This change ensures
that the multiplication operation is explicitly prioritized over the
addition operation, although the original code would have worked correctly
due to operator precedence rules.

This change improves code readability and reduces potential misunderstandings
regarding the intended calculation.

Author: bvdcode

Sources/TelegramBot.ConsoleTest/Controllers/CafeController.cs

@@ -30,7 +30,7 @@ public async Task<IActionResult> HandleBurgersAsync(int burgers, bool drink)
             const int burgerPrice = 5;
             const int drinkPrice = 2;
             int cookTime = Random.Shared.Next(18, 35);
-            int totalPrice = burgers * burgerPrice + (drink ? drinkPrice : 0);
+            int totalPrice = (burgers * burgerPrice) + (drink ? drinkPrice : 0);
 
             string text = "🍽🍽🍽🍽🍽🍽🍽🍽🍽🍽🍽🍽\n" +
                 "Vadim's Burgers got your order!\n\n" +