Tentative fix for .TH section of generated man page (#1049)

[elboulangero]

References:

• Man page generation wrong in latest release #1049
• https://liw.fi/manpages/

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[thaJeztah]

@elboulangero thanks! looks like you need to accept the CLA

[elboulangero]

oh this is a duplicate of #1255 actually, closing then.