fix: revert README.md to v1 documentation #661

Job	Run time
checks / pre-commit	38s
checks / readme-snippets	11s
checks / test (3.10, lowest-direct, windows-latest)	2m 38s
checks / test (3.10, locked, ubuntu-latest)	52s
checks / test (3.10, locked, windows-latest)	2m 24s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 18s
checks / test (3.12, locked, windows-latest)	3m 34s
checks / test (3.13, lowest-direct, windows-latest)	3m 4s
checks / test (3.13, locked, ubuntu-latest)	48s
checks / test (3.11, locked, windows-latest)	2m 31s
checks / test (3.11, locked, ubuntu-latest)	51s
checks / test (3.14, lowest-direct, windows-latest)	2m 33s
checks / test (3.12, lowest-direct, windows-latest)	3m 39s
checks / test (3.13, locked, windows-latest)	2m 53s
checks / test (3.10, lowest-direct, ubuntu-latest)	59s
checks / test (3.14, locked, windows-latest)	3m 41s
checks / test (3.13, lowest-direct, ubuntu-latest)	52s
checks / test (3.12, lowest-direct, ubuntu-latest)	1m 1s
checks / test (3.12, locked, ubuntu-latest)	58s
checks / test (3.11, lowest-direct, ubuntu-latest)	52s
checks / test (3.14, locked, ubuntu-latest)	2m 15s
checks / test (3.11, lowest-direct, windows-latest)	3m 26s
all-green	4s
	42m 2s

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