fix: broken link to ratatui logo example (#853)

Trying to navigate to ratatui logo example results in 404.

Author: j-g00da

src/content/docs/examples/Apps/index.mdx

@@ -30,6 +30,6 @@ import userInputImage from "./user_input.gif";
 
 ## [Popup <Image src={popupImage} alt="Popup App"/>](./popup)
 
-## [Ratatui Logo <Image src={ratatuiLogoImage} alt="Ratatui Logo App"/>](./ratatui_logo)
+## [Ratatui Logo <Image src={ratatuiLogoImage} alt="Ratatui Logo App"/>](./ratatui-logo)
 
 ## [User Input <Image src={userInputImage} alt="User Input App"/>](./user_input)