When freezing framework manifests, use aosp_arm64 target am: 6ac1197a06

Original change: https://android-review.googlesource.com/c/platform/system/libhidl/+/2256181

Change-Id: I37de26fe3c3ef9e3a7cf7d9945b185b9a4290ffd
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/vintfdata/README.md b/vintfdata/README.md
index cfc1da7..6116757 100644
--- a/vintfdata/README.md
+++ b/vintfdata/README.md
@@ -70,7 +70,7 @@
 Execute the following, replacing the argument with the level to freeze:
 
 ```shell script
-lunch cf_x86_phone-userdebug # or any generic target
+lunch aosp_arm64
 LEVEL=5
 ./freeze.sh ${LEVEL}
 ```