doc: update known issues list in v2.5 release notes
@@ -205,5 +205,5 @@ Known Issues
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- :acrn-issue:`6256` - [TGL][qemu] Cannot launch qemu on TGL
-- :acrn-issue:`6256` - [S5]S5 fails on post-launched RTVM
+- :acrn-issue:`6257` - [S5]S5 fails on post-launched RTVM
