Fix nonascii object names #193

Job	Run time
tests (Code style checks, ubuntu-latest, 3.x, codestyle)	25s
tests (ubuntu-latest, 3.8, py38-test-sphinx_oldest)	1m 6s
tests (ubuntu-latest, 3.8, py38-test-sphinx53)	1m 0s
tests (ubuntu-latest, 3.9, py39-test-sphinx62)	1m 19s
tests (ubuntu-latest, 3.9, py39-test-sphinx70)	1m 5s
tests (ubuntu-latest, 3.10, py310-test-sphinx71)	1m 4s
tests (ubuntu-latest, 3.11, py311-test-sphinx72-cov-clocale)	1m 40s
tests (ubuntu-latest, 3.12, py312-test-sphinxdev)	1m 36s
tests (macos-latest, 3.10, py310-test-sphinx72-clocale)	2m 47s
tests (macos-latest, 3.11, py311-test-sphinxdev)	3m 15s
tests (windows-latest, 3.8, py38-test-sphinx_oldest)	2m 53s
tests (windows-latest, 3.10, py310-test-sphinx72)	2m 41s
tests (windows-latest, 3.11, py311-test-sphinxdev)	2m 53s
	23m 44s

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