docs: clarify connect Puppet master page

Problem:

 The document at https://puppet.com/docs/puppetdb/latest/connect_puppet_master.html which from it's title is the 'latest' version document refers to installing the 'puppetdb-termini' package. With Puppet Server prepackaged for Debian Buster (Debian 10) - puppetserver6.7.1-1buster - there is no puppet-termini package available. Should this instead reference the puppet-terminus-puppetdb package which is in the repo? Or is there a package missing from the repo? The Ubuntu Bionic repo has a 'puppetdb-termini package' but not a 'puppet-terminus-puppetdb' package, the Debian Buster repo has a 'puppet-terminus-puppetdb' package but not a 'puppetdb-termini' package. It looks like it should be one or the other that get installed, not sure if this is a change in packaging as both bionic and buster install puppetdb 6.7.1-1

Suggested improvement:

https://puppet.com/docs/puppetdb/latest/connect_puppet_master.html

Current text :

On platforms with packages

Enable the Puppet Collection repo and then install the puppetdb-termini package:

$ sudo puppet resource package puppetdb-termini ensure=latest.

Suggested improvement:

On platforms with packages

Enable the Puppet Collection repo and then install the puppet-terminus-puppetdb or puppetdb-termini package depending on the repository used:

$ sudo puppet resource package [puppet-terminus-puppetdb|puppetdb-termini] ensure=latest

Summary:

 Either this is a change in packaging (implied a change in documentation for 'latest' or it's an error in packaging for Debian Buster.