Improve text input docs #1238

Job	Run time
mypy	26s
ruff	8s
sdist	8m 34s
parse_sdl (macos-latest, 3.2.16)	23s
parse_sdl (windows-latest, 3.2.16)	34s
test-docs	3m 24s
tox (ubuntu-latest)	3m 25s
linux-wheels (x86_64, pp310-manylinux*)	3m 24s
linux-wheels (x86_64, cp310-manylinux*)	3m 53s
linux-wheels (aarch64, pp310-manylinux*)	3m 48s
build-macos (cp310-*_universal2)	1m 46s
linux-wheels (aarch64, cp310-manylinux*)	4m 18s
build-macos (pp310-*)	3m 40s
build (ubuntu-latest, 3.10, x64)	5m 7s
build (windows-latest, 3.10, x86)	3m 0s
build (windows-latest, pypy-3.10, x86)	3m 37s
build (windows-latest, pypy-3.10, x64)	3m 15s
build (ubuntu-latest, pypy-3.10, x64)	4m 36s
build (windows-latest, 3.10, x64)	2m 37s
pyodide	3m 50s
publish	0s
	1h 3m 45s

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