Update build paths in build_mozc_in_docker.md.
Update build paths in build_mozc_in_docker.md.

- Fix a wrong path (lib/mozc_renderer -> lib/mozc/mozc_renderer)
- Add paths for IBus component XML and icons.

PiperOrigin-RevId: 422723002

google/mozc,google/mozc,google/mozc,google/mozc,google/mozc,fcitx/mozc,fcitx/mozc,fcitx/mozc,fcitx/mozc,fcitx/mozc