Update CI/CD README with Flatpak and macOS details

Added Flatpak bundle to the list of Linux artifacts and clarified that the macOS zipped application bundle is for arm64 architecture.

.github/CI_CD_README.md

@@ -48,9 +48,10 @@ The workflow creates the following files based on the platform:
 - `YTSage-v{version}-{arch}.AppImage` - AppImage portable (x86_64, aarch64)
 - `YTSage-v{version}-{arch}.rpm` - RPM package
 - `YTSage-v{version}-{arch}.deb` - Debian package
+- `YTSage-v{version}-{arch}.flatpak` - Flatpak bundle
 
 #### macOS
-- `YTSage-v{version}-{arch}.app.zip` - Zipped application bundle (x64, arm64)
+- `YTSage-v{version}-{arch}.app.zip` - Zipped application bundle arm64
 - `YTSage-v{version}-{arch}.dmg` - Disk image installer
 
 ## Workflow Features