Fix minor documentation formatting issues in dancing links

[Kerl13]

Component: documentation

Author: Martin Pépin

Branch: 1c9e627

Reviewer: Frédéric Chapoton

Issue created by migration from https://trac.sagemath.org/ticket/34567

[Kerl13]

Author: Martin Pépin

[fchapoton]

Reviewer: Frédéric Chapoton

[fchapoton]

comment:3

ok, feu vert

[vbraun]

Changed branch from u/MartinPepin/dancing_links_docs_formatting to 1c9e627

[seblabbe]

Changed commit from 1c9e627 to none

[seblabbe]

comment:5

Is it normal that build/pkgs/configure/checksums.ini and build/pkgs/configure/package-version.txt were modified in this ticket?