[example, doc] fix: Fix RLHF script bugs and tutorial tokenization path#2364

yaoyu-33 wants to merge 1 commit intomainNVIDIA-NeMo/Megatron-Bridge:mainfrom

fix/rlhf-bridge-bugs-and-tutorial-pathNVIDIA-NeMo/Megatron-Bridge:fix/rlhf-bridge-bugs-and-tutorial-pathCopy head branch name to clipboard