Add release notes for SkyDemo.apk 0.0.23
diff --git a/examples/demo_launcher/apk/release_notes/0.0.23.txt b/examples/demo_launcher/apk/release_notes/0.0.23.txt
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+++ b/examples/demo_launcher/apk/release_notes/0.0.23.txt
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+Small updates for various demos
+Asteroids has sounds, Fitness has charting, etc.
+This app is slowly being replaced by publishing individual apps.