Remove extraneous blank line in documentation.

Eliminated an unnecessary blank line in the API context documentation for improved readability and formatting consistency. No functional changes were made to the content.

Author: ryanbekhen

docs/api/ctx.md

@@ -484,7 +484,6 @@ app.Get("/", func(c fiber.Ctx) error {
 })
 ```
 
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 ## Format
 
 Performs content-negotiation on the [Accept](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Accept) HTTP header. It uses [Accepts](ctx.md#accepts) to select a proper format from the supplied offers. A default handler can be provided by setting the `MediaType` to `"default"`. If no offers match and no default is provided, a 406 (Not Acceptable) response is sent. The Content-Type is automatically set when a handler is selected.