Refactor README content and add JavaScript section

Updated README to include JavaScript in the built technologies section and removed duplicate content.

Author: sidsimo

README.md

@@ -16,7 +16,8 @@ You can check out the live version here:
 ## 🛠️ Built With
 * **HTML5** - Structuring the dropdown button and unordered list.
 * **CSS3** - Custom styling, text centering, borders, and dark gradient background.
-
+* **JavaScript** - Dynamic active states and dropdown toggle handling.
+  
 create a custom dropdown menu that lets users select an item from a list. The dropdown should have a default state showing a placeholder text, an open state revealing all options, and a selected state where the chosen item is displayed. When an item is selected, the dropdown closes, and the selected item is highlighted.
 
 This project will help me practice DOM manipulation, event handling, and creating responsive and interactive elements with JavaScript.