[Request]: UX - Remove `images` alias for `image` subcommand.

[jglogan]

Feature or enhancement request details

This is the only command that has a plural alias. It can be confusing because it doesn't do what docker images does, and it could lead users to think that other resources should have plural aliases as well.

Tasks:

• Remove alias.
• Find/replace instances of alias in code (tests).
• Find/replace instances of alias in documentation.

Code of Conduct

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