Merge "Upgrade markdown to 3.4.1" am: 79292f57ff am: 15d05f2d07

Original change: https://android-review.googlesource.com/c/platform/external/markdown/+/2288233

Change-Id: I2616d81ff49591ed28143b0f1aa6231834b2b824
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>