fix: leftover, correct URL for the course root

Author: honzajavorek

sources/academy/webscraping/scraping_basics_javascript/index.md

@@ -3,7 +3,7 @@ title: Web scraping basics for JavaScript devs
 description: Learn how to use JavaScript to extract information from websites in this practical course, starting from the absolute basics.
 sidebar_position: 1.5
 category: web scraping & automation
-slug: /scraping-basics-javascript2
+slug: /scraping-basics-javascript
 unlisted: true
 ---