Update readme to point to correct GeekHack link

keyboards/eagle_viper/v2/readme.md

@@ -1,7 +1,7 @@
-# Duck Octagon V2
+# Duck Eagle/Viper V2
 
-Non official firmware for custom Korean keyboard with 75% key layout made by Duck.  
-Group buy was run January 2016 via [geekhack](https://geekhack.org/index.php?topic=78549.0) with 2 rounds, 100 keyboards total. 
+Non official firmware for custom Korean keyboard with 60% key layout made by Duck.  
+Group buy was run November 2016 via [geekhack](https://geekhack.org/index.php?topic=86087.0) with 100 keyboards total. 
 
 Keyboard Maintainer: [MechMerlin](https://github.com/mechmerlin)  
 Hardware Supported: Duck Eagle/Viper PCB Ver 2.0, Atmega32u4