Corrected alignment of the Hercules console logo

- This fixes a display issue in terminal emulators that ignore the Esc[K
  ANSI sequence (i.e. GNU screen or tmux, with TERM=screen or
  TERM=screen-256color.)
- In those terminal emulators, the logo background has now a fixed
  width of 72 characters.

Signed-off-by: Haru <haru@dotalux.com>