fix: correct mistakes letters in word

backend/handlers/cart_handler.go

@@ -39,8 +39,8 @@ func AddToCart(c *gin.Context) {
 	userID := getUserID(c)
 
 	var req struct {
-		ItemID   uint    `json:"item_id" bindind:"required"`
-		Quantity float64 `json:"quantity" bindind:"required,gt=0"`
+		ItemID   uint    `json:"item_id" binding:"required"`
+		Quantity float64 `json:"quantity" binding:"required,gt=0"`
 	}
 
 	if err := c.ShouldBindJSON(&req); err != nil {

frontend/src/pages/Shop.jsx

@@ -38,7 +38,7 @@ export default function Shop() {
     try {
       await api.addToCart({
         item_id: product.id,
-        quanity: selectedWeight,
+        quantity: selectedWeight,
       });
       alert(`${product.name} добавлен в корзину`);
     } catch (err) {