Use the man: keyword instead of {{< manpage >}}.

[emaste]

I'm not an asciidoc expert, do we have some local docs for these?

[debdrup]

In D29278#655590, @emaste wrote:

I'm not an asciidoc expert, do we have some local docs for these?

I'm unsure where exactly they got added, but the first use of it was by @gjb with 1833fecccb4.

If all else fails, we can try asking @carlavilla.

[debdrup]

Nevermind, just after I wrote that, I remembered something.
It's implemented using doc/shared/lib/ManPageMacro/extension.rb

[jhb]

Honestly, I had written most of the next change using the old syntax and then saw this in some new changes when I rebased. I already had in my mind to ask for a shorter syntax as the old one is pretty verbose, especially compared to the old SGML entities we had for DocBook. The man: keyword is quite nice though and is as compact as the old style.

[emaste]

LGTM if it works :)

[debdrup]

In D29278#655642, @jhb wrote:

Honestly, I had written most of the next change using the old syntax and then saw this in some new changes when I rebased. I already had in my mind to ask for a shorter syntax as the old one is pretty verbose, especially compared to the old SGML entities we had for DocBook. The man: keyword is quite nice though and is as compact as the old style.

I like the ruby macro processed keywords better too, so if nobody else steps up I'll probably do a pass to change all of them?

Assuming this looks good once rendered using make run or make build, you've got my approval to commit it.