Correct comment spelling error. am: 0a6d0b2987 am: e104a82fe2 am: 9d8d3016bd

Original change: https://android-review.googlesource.com/c/platform/external/libhevc/+/2519759

Change-Id: Ia0c81edcce11dd1b7a7932d18cc03830a09a1d41
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>