Update whats_new.md documentation

docs/whats_new.md

@@ -68,7 +68,6 @@ We have made several changes to the Fiber app, including:
 - **Listen**: Now has a configuration parameter.
 - **Listener**: Now has a configuration parameter.
 
-
 ### CTX interface + customizable
 
 Fiber v3 introduces a more customizable `Ctx` interface, allowing developers to create their own context classes. This flexibility enables you to extend the default context with additional methods and properties tailored to your application's needs.
@@ -142,7 +141,6 @@ In this example, the `CustomCtx` struct extends the default `fiber.Ctx` with a c
 
 </details>
 
-
 ## 🗺 Router
 
 We have slightly adapted our router interface
@@ -609,6 +607,7 @@ curl "http://localhost:3000/query?age=25"
 curl "http://localhost:3000/query?age=abc"
 # Output: 0
 ```
+
 </details>
 
 <details>
@@ -640,6 +639,7 @@ curl -H "User-Agent: CustomAgent" "http://localhost:3000/header"
 curl "http://localhost:3000/header"
 # Output: "Unknown"
 ```
+
 </details>
 
 ## 🧬 Middlewares
@@ -1095,6 +1095,7 @@ app.Get("/old", func(c fiber.Ctx) error {
       return c.Redirect().Route("newRoute")
     })
     ```
+
     </details>
 
 2. **RedirectBack**: Use `c.Redirect().Back()` instead of `c.RedirectBack()`.
@@ -1115,6 +1116,7 @@ app.Get("/back", func(c fiber.Ctx) error {
       return c.Redirect().Back()
     })
     ```
+
     </details>
 
 3. **Redirect**: Use `c.Redirect().To()` instead of `c.Redirect()`.
@@ -1135,6 +1137,7 @@ app.Get("/old", func(c fiber.Ctx) error {
       return c.Redirect().To("/new")
     })
     ```
+
     </details>
 
 ### 🌎 Client package
@@ -1149,7 +1152,7 @@ Fiber v3 introduces a completely rebuilt client package with numerous new featur
 
 #### Migration Instructions
 
-**Import Path**
+**Import Path**:
 
 Update the import path to the new client package.
 
@@ -1159,6 +1162,7 @@ Update the import path to the new client package.
 ```go
 import "github.com/gofiber/fiber/v2/client"
 ```
+
 </details>
 
 <details>
@@ -1167,6 +1171,7 @@ import "github.com/gofiber/fiber/v2/client"
 ```go
 import "github.com/gofiber/fiber/v3/client"
 ```
+
 </details>
 
 :::caution