[InternNav] add VL-LN Bench docs#7

DuangZhu wants to merge 3 commits intoInternRobotics:mainInternRobotics/internrobotics.github.io:mainfrom

DuangZhu:feat/vlln-bench-guideDuangZhu/internrobotics.github.io:feat/vlln-bench-guideCopy head branch name to clipboard