doc: Correct html5 download path error (#1953)

Wu Can

2024-07-24 d916542e3442f788138c233d392b04ab98af1c62

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export FUNASR_RUNTIME_ROOT=`pwd`/../
export PATH=$FUNASR_RUNTIME_ROOT/onnxruntime/build/bin:$PWD:$PATH
export LC_ALL=C