broken link `rel/doc/a2_build_video.md` and `rel/doc/a2_run_video.md`

[kzall0c]

If it's a short video described, it's probably better to upload the video file or youtube link directly rather than using Google Drive link, also each markdown file have broken video link.

A2I Build Process

• https://drive.google.com/file/d/1YsMWHYQBn1pRCGKneekjSP0c0aqyxdQR/view?usp=sharing

A2I SMT4 Example

• https://drive.google.com/file/d/1bBEbAC9SiCxjW6XiXJGRjZ7Cegs8O3eN/view?usp=sharing