update convert docs

Author: dozheiny

docs/api/ctx.md

@@ -2206,21 +2206,23 @@ app.Get("/", func(c fiber.Ctx) error {
 
 ## Convert 
 Converts a string value to a specified type, handling errors and optional default values.
-You can combine this function with other methods and functions.
-
+This function simplifies the conversion process by encapsulating error handling and the management of default values, making your code cleaner and more consistent.
 ```go title="Signature"
 func Convert[T any](value string, convertor func(string) (T, error), defaultValue ...T) (*T, error)
 ```
 
-```go title="Example"
-  fiber.Convert("true", strconv.ParseBool) // true, nil
-  fiber.Convert("123", strconv.Atoi, 5) // 123, nil
-```
-
 ```go title="Example"
 // GET http://example.com/id/bb70ab33-d455-4a03-8d78-d3c1dacae9ff
 app.Get("/id/:id", func(c fiber.Ctx) error {
   fiber.Convert(c.Params("id"), uuid.Parse) // UUID(bb70ab33-d455-4a03-8d78-d3c1dacae9ff), nil
 
+
+// GET http://example.com/search?id=65f6f54221fb90e6a6b76db7
+app.Get("/search", func(c fiber.Ctx) error) {
+  fiber.Convert(c.Query("id"), mongo.ParseObjectID) // objectid(65f6f54221fb90e6a6b76db7), nil
+  fiber.Convert(c.Query("id"), uuid.Parse) // uuid.Nil, error(cannot parse given uuid)
+  fiber.Convert(c.Query("id"), uuid.Parse, mongo.NewObjectID) // new object id generated and return nil as error.
+}
+
   // ...
 })