Small Typo

[MARD1NO]

In https://github.com/NVIDIA/TensorRT-LLM/blob/main/docs/source/performance/perf-benchmarking.md

ENABLE_FDL -> ENABLE_PDL

[hello-11]

@MARD1NO Thanks for your for correcting the mistake. Weill update it next week.