asciinema: add option placeholders

[Managor]

• The page(s) are in the correct platform directories: common, linux, osx, windows, sunos, android, etc.
• The page(s) have at most 8 examples.
• The page description(s) have links to documentation or a homepage.
• The page(s) follow the content guidelines.
• The page(s) follow the style guide.
• The PR title conforms to the recommended templates.
• Version of the command being documented (if known):

[MachiavelliII]

Hi @Managor, I'm not sure where you got this from, but those options don't work in version 2.2.0. I hope I didn't miss anything.

$ asciinema a
usage: asciinema [-h] [--version] {rec,play,cat,upload,auth} ...
asciinema: error: argument {rec,play,cat,upload,auth}: invalid choice: 'a' (choose from 'rec', 'play', 'cat', 'upload', 'auth')
$ asciinema r
usage: asciinema [-h] [--version] {rec,play,cat,upload,auth} ...
asciinema: error: argument {rec,play,cat,upload,auth}: invalid choice: 'r' (choose from 'rec', 'play', 'cat', 'upload', 'auth')
$ asciinema p https://asciinema.org/a/709161
usage: asciinema [-h] [--version] {rec,play,cat,upload,auth} ...
asciinema: error: argument {rec,play,cat,upload,auth}: invalid choice: 'p' (choose from 'rec', 'play', 'cat', 'upload', 'auth')

Non-existing short/long options

[Managor]

Arch has version 3.0 in its repos and I tested against that. All the subcommands and aliases worked there.
Now that I check it, it seems to be an rc. Might as well mark this PR a draft at least until they dismiss the rc part of the version.
https://archlinux.org/packages/extra/any/asciinema/