Use explicit version in install instructions
The install instructions for Antora (both the CLI and default site generator) should recommend specifying an explicit version. Doing so will help avoid unexpected surprises for the user when a new version of Antora is released. It also means the users will install the version that matches the docs they're reading.
Using the version of the current documentation component version should be sufficient.
[subs=attributes+]
$ npm i -g @antora/cli@{page-component-version}
which would resolve to:
[subs=attributes+]
$ npm i -g @antora/cli@1.1
The npm client (npm or yarn) will fill in the patch number automatically.