[Docs] Complete sentence on "manage installation" doc

[joshuabezaleel]

What does this change

Complete sentence on "Manage Installation" doc, adding "Porter CLI" at the end.
From "Install a bundle using imperative commands with the" to "Install a bundle using imperative commands with the Porter CLI".

What issue does it fix

Closes #2027

Notes for the reviewer

Checklist

• Did you write tests?
• Did you write documentation?
• Did you change porter.yaml or a storage document record? Update the corresponding schema file.
• If this is your first pull request, please add your name to the bottom of our Contributors list. Thank you for making Porter better! 🙇‍♀️

Reviewer Checklist

• Comment with /azp run test-porter-release if a magefile or build script was modified
• Comment with /azp run porter-integration if it's a non-trivial PR

[VinozzZ]

LGTM