docs: Simplification of the DFtoVW tutorial #5963

Job	Run time
manylinux.amd64.py3.6.build	4m 9s
manylinux.aarch64.py${{ matrix.config.version }}.build	0s
manylinux.amd64.py3.7.build	3m 55s
ubuntu-latest.amd64.py3.8.sdist-bundle	43s
manylinux.amd64.py3.8.build	4m 17s
manylinux.amd64.py3.9.build	4m 3s
macos.amd64.py3.6.build	9m 54s
manylinux.amd64.py3.10.build	4m 6s
windows-2019.amd64.py3.6.build	6m 17s
macos.amd64.py3.7.build	9m 17s
windows-2019.amd64.py3.7.build	6m 29s
macos.amd64.py3.8.build	9m 19s
windows-2019.amd64.py3.8.build	5m 28s
macos.amd64.py3.9.build	9m 48s
windows-2019.amd64.py3.9.build	5m 27s
macos.amd64.py3.10.build	9m 40s
windows-2019.amd64.py3.10.build	5m 31s
manylinux.aarch64.py${{ matrix.config.version }}.test	0s
ubuntu-latest.amd64.py3.8.sdist-build-test	4m 55s
manylinux.amd64.py3.6.test	3m 11s
manylinux.amd64.py3.7.test	3m 5s
manylinux.amd64.py3.8.test	2m 35s
manylinux.amd64.py3.9.test	2m 41s
manylinux.amd64.py3.10.test	2m 33s
windows-2019.amd64.py3.6.test	7m 45s
windows-2019.amd64.py3.7.test	6m 57s
windows-2019.amd64.py3.8.test	6m 37s
windows-2019.amd64.py3.9.test	7m 12s
windows-2019.amd64.py3.10.test	7m 18s
macos.amd64.py3.6.test	5m 1s
macos.amd64.py3.7.test	4m 58s
macos.amd64.py3.8.test	12m 18s
macos.amd64.py3.9.test	13m 12s
macos.amd64.py3.10.test	14m 32s
	3h 23m 13s

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