refactor: replace interface with any

handlers/form_handler.go

@@ -42,7 +42,7 @@ func FormHandler(content embed.FS, monsters *[]model.Monster) http.HandlerFunc {
 		}
 
 		// Execute the template and render the response.
-		data := map[string]interface{}{
+		data := map[string]any{
 			"Title":    "Dungeons & Dragons Monster Generator",
 			"Monsters": *monsters,
 		}