docs: Fix bad @code syntax in doc comment am: 29e0d15f

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23797304



Change-Id: I5c77985ecd80f96e9c5f5bda56ff2c45afd98fcd
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>