refactor(appointment): update merchant details and payment example values

Update merchant address structure to include detailed address fields and modify example payment values to be more realistic. Remove commented-out created_at/modified_at fields as they're no longer needed.

app/models/appointment.py

@@ -64,8 +64,6 @@ class Appointment(BaseModel):
     payment_status: PaymentStatus = PaymentStatus.PENDING  # ✅ Default to "pending"
     payment_id: Optional[str] = None
     cleared_amount: float = Field(default=0.0, ge=0, description="Cleared amount must be non-negative")
-    #created_at: datetime = Field(default_factory=lambda: datetime.now(timezone.utc))
-    #modified_at: datetime = Field(default_factory=lambda: datetime.now(timezone.utc)) 
     order_id: Optional[str] = Field(None, description="Order ID is required if payment mode is ONLINE")
 
     class Config:
@@ -76,8 +74,15 @@ class Appointment(BaseModel):
         json_schema_extra = {
             "example": {
                 "merchant_id": "MERCHANT123",
-                "merchant_name": "Merchant Name",
-                "merchant_address": "Merchant Address",
+                "merchant_name": "Elegant Salon",
+                "city": "Mumbai",
+                "merchant_address": {
+                    "line1": "12 High Street",
+                    "area": "Andheri East",
+                    "city": "Mumbai",
+                    "state": "MH",
+                    "zip_code": "400093"
+                },
                 "location_id": "LOC001",
                 "customer_id": "CUST567",
                 "appointment_date": "2025-02-25",
@@ -102,12 +107,11 @@ class Appointment(BaseModel):
                 "total_amount": 50.0,
                 "discount": 5.0,
                 "payment_mode": "online",   
-                "payment_status": "PAID",   
-                "payment_id": "ORDER789",
+                "payment_status": "paid",   
+                "payment_id": "pay_789xyz",
                 "cleared_amount": 45.0,
-                "order_id": "ORDER789",
-                #"created_at": "2025-02-20 10:15:00",
-                #"modified_at": "2025-02-21 12:00:00"
+                "order_id": "order_789xyz",
+ 
             }
         }