update highlight js

Author: 4drianMatei

frontend/angular.json

@@ -23,7 +23,7 @@
             ],
             "styles": [
               "src/styles.scss",
-              "./node_modules/highlight.js/styles/dracula.css",
+              "./node_modules/highlight.js/styles/github-dark.css",
               "./node_modules/izitoast/dist/css/iziToast.min.css"
               // "./node_modules/highlight.js/styles/github.css"
             ],