Update CHANGELOG.md

v2.3.4 was not actually released on github

Author: MrClock

Arma3ObjectBuilder/CHANGELOG.md

@@ -11,7 +11,7 @@
 - sharp edges data block is no longer exported if no actual sharp edges are detected
 - `Driver: offroad` common proxy had incorrect path
 
-## [v2.3.4](https://github.com/MrClock8163/Arma3ObjectBuilder/releases/tag/v2.3.4) (Blender 2.90 -> 4.2)
+## v2.3.4 (Blender 2.90 -> 4.2)
 
 ### Added