Fix disqus background in dark mode. (#732)

XiaoTian

28.53.2022 9f7ec4f706e7d0ff4997dc692b368ebc9516a5ba

 assets/js/coder.js

@@ -76,6 +76,9 @@
        
    }
    
    // Create and send event
    const event = new Event('themeChanged');
    document.dispatchEvent(event);
}

function rememberTheme(theme) {