Update JDownloader2 documentation with new links

Author: Shikakiben

apps/jdownloader2.md

@@ -5,7 +5,11 @@
 JDownloader is a free, open-source download management tool with a huge community that makes downloading as easy and fast as it should be. Users can start, stop or pause downloads, set bandwith limitations, auto-extract archives and much more. It's an easy-to-extend framework that can save hours of your valuable time every day! 
 
 
+<img width="1146" height="850" alt="Jdownloader2" src="https://github.com/user-attachments/assets/22ac990d-8f35-4dc3-b9f8-b0faf8c24827" />
+
+
  SITE: https://jdownloader.org/
+ 
  SOURCE: https://github.com/Shikakiben/JDownloader2-AppImage
 
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