Fixed a bullet list in the iterators topic. #9135

Job	Run time
codespell	16s
clang-format	12s
documentation	24s
PSTL offload cpu,bknd=dpcpp,cmplr=icpx,ubuntu-22.04,std=с++17,cfg=release	8m 24s
CPU,bknd=dpcpp,cmplr=icpx,ubuntu-20.04,std=с++17,cfg=release	15m 56s
HOST,bknd=omp,cmplr=icpc,macos-11,std=c++17,cfg=release	24m 13s
FPGA_EMU,bknd=dpcpp,cmplr=icpx,ubuntu-20.04,std=с++17,cfg=release	15m 2s
HOST,bknd=tbb,cmplr=icx-cl,windows-2019,std=c++17,cfg=release	19m 5s
HOST,bknd=tbb,cmplr=icpx,ubuntu-20.04,std=с++17,cfg=release	19m 6s
HOST,bknd=tbb,cmplr=cl,windows-2019,std=c++17,cfg=release	19m 6s
HOST,bknd=omp,cmplr=icpx,ubuntu-20.04,std=с++17,cfg=release	15m 20s
CPU,bknd=dpcpp,cmplr=icx,windows-2019,std=c++17,cfg=release	16m 42s
HOST,bknd=omp,cmplr=g++,ubuntu-latest,std=с++17,cfg=release	11m 35s
HOST,bknd=tbb,cmplr=g++,ubuntu-latest,std=с++17,cfg=release	15m 8s
HOST,bknd=tbb,cmplr=g++,ubuntu-20.04,std=с++17,cfg=release	15m 16s
HOST,bknd=tbb,cmplr=clang++,ubuntu-20.04,std=с++17,cfg=release	17m 35s
HOST,bknd=omp,cmplr=clang++,ubuntu-20.04,std=с++17,cfg=release	8m 11s
HOST,bknd=tbb,cmplr=clang++,ubuntu-latest,std=с++17,cfg=release	15m 22s
HOST,bknd=tbb,cmplr=icpx,ubuntu-20.04,std=с++17,cfg=release	18m 41s
HOST,bknd=serial,cmplr=g++,ubuntu-20.04,std=с++17,cfg=release	6m 27s
	4h 22m 1s

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