Update Affinity source link (#98)

* Update Affinity source link

* Add KOReader screenshots

Added image links for KOReader artwork in the documentation.

* Revise Affinity description

Author: shuvashish76

apps/affinity.md

@@ -2,7 +2,13 @@
 
  Affinity is a suite of professional graphic design, photo editing, and desktop publishing software. It's a common alternative to software from the Adobe Suite such as for Adobe Photoshop, Adobe Illustrator, Adobe InDesign.
 
- SITE/SOURCE: https://github.com/https://github.com/ryzendew/AffinityOnLinux
+ The installer automatically sets up Wine (a compatibility layer for running Windows applications) with all necessary configurations, dependencies, and optimizations.
+
+ <img width="1275" height="1323" alt="Affinity Linux Installer" src="https://github.com/user-attachments/assets/b04e7307-ed95-484d-931a-713aadfe6c47" />
+
+ SITE: https://www.affinity.studio/
+ 
+ SOURCE: https://github.com/ryzendew/Linux-Affinity-Installer
 
  | [Applications](https://portable-linux-apps.github.io/apps.html) | [Home](https://portable-linux-apps.github.io)
- | --- | --- |
+ | --- | --- |

apps/koreader.md

@@ -1,6 +1,10 @@
 # KOREADER
 
  KOReader is a document viewer
+
+<a href="https://github.com/koreader/koreader-artwork/raw/master/koreader-menu.png"><img src="https://github.com/koreader/koreader-artwork/raw/master/koreader-menu-thumbnail.png" alt="" width="200px"></a>
+<a href="https://github.com/koreader/koreader-artwork/raw/master/koreader-footnotes.png"><img src="https://github.com/koreader/koreader-artwork/raw/master/koreader-footnotes-thumbnail.png" alt="" width="200px"></a>
+<a href="https://github.com/koreader/koreader-artwork/raw/master/koreader-dictionary.png"><img src="https://github.com/koreader/koreader-artwork/raw/master/koreader-dictionary-thumbnail.png" alt="" width="200px"></a>
 
  SITE: https://github.com/koreader/koreader