Fix old domains in docs/error message #79

Job	Run time
Test against different Python versions (3.7, ubuntu-latest)	36s
Test against different Python versions (3.7, windows-latest)	1m 19s
Test against different Python versions (3.7, macos-latest)	40s
Test against different Python versions (3.8, ubuntu-latest)	31s
Test against different Python versions (3.8, windows-latest)	1m 57s
Test against different Python versions (3.8, macos-latest)	46s
Test against different Python versions (3.9, ubuntu-latest)	42s
Test against different Python versions (3.9, windows-latest)	1m 40s
Test against different Python versions (3.9, macos-latest)	59s
Test against different Python versions (3.10, ubuntu-latest)	38s
Test against different Python versions (3.10, windows-latest)	2m 8s
Test against different Python versions (3.10, macos-latest)	44s
Test against different Python versions (3.11, ubuntu-latest)	33s
Test against different Python versions (3.11, windows-latest)	1m 25s
Test against different Python versions (3.11, macos-latest)	41s
	15m 19s

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