Merge "Add the path of GSI document in gsi_release.mk" am: 94c9b20f am: d64b523a am: 1d690b80

Original change: https://android-review.googlesource.com/c/platform/build/+/2287294



Change-Id: I6a5b36359c13094495261836a0f8ccd3f1276d2c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>