docs: More clean-ups (smoe:docs_man_adoc_20240813-2) #10845

Job	Run time
htmldocs	24m 13s
package-arch (debian:bullseye)	29m 11s
package-indep (debian:bullseye)	42m 19s
package-arch (debian:bookworm)	30m 3s
package-indep (debian:bookworm)	32m 47s
rip-and-test	27m 42s
rip-and-test-clang	26m 50s
package-arch (debian:sid)	30m 1s
package-indep (debian:sid)	37m 8s
	4h 40m 14s

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