chore: backfill changelog pr number

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: jvsena42

CHANGELOG.md

@@ -8,7 +8,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased]
 
 ### Fixed
-- Fix crash when returning app to foreground on Receive screen
-- Show loading state on Spending tab when node is not running
+- Fix crash when returning app to foreground on Receive screen #875
+- Show loading state on Spending tab when node is not running #875
 
 [Unreleased]: https://github.com/synonymdev/bitkit-android/compare/v2.1.2...HEAD