fixed android app link

Author: joachimheintz

_data/download.yaml

@@ -19,7 +19,7 @@ linux:
   src_link: https://github.com/csound/csound/archive/refs/tags/6.18.1.zip
 
 android_app:
-  link: https://play.google.com/store/apps/details?id=com.csounds.Csound6&hl=en
+  link: https://github.com/gogins/csound-android/releases/
 
 web:
   link: https://www.jsdelivr.com/package/npm/@csound/browser?path=dist