Remove indication that self-contained option accepts true/false

[meaghanlewis]

Summary

This pull request updates documentation for .NET CLI publishing options to clarify the behavior of the --self-contained and --no-self-contained options so they don't indicate true/false can be passed.

[Copilot]

Pull request overview

This pull request updates CLI documentation for the --self-contained and --no-self-contained options to clarify that these are boolean flags (switches) rather than options that accept true/false values.

• Removes misleading text suggesting the options accept boolean parameters
• Updates descriptions to be more explicit about the behavior of each option
• Modernizes the date metadata to reflect the current documentation update

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
includes/cli-self-contained.md	Removes "The default is true" text that implied the option accepts a boolean value, leaving a clear description of the option's behavior
includes/cli-no-self-contained.md	Replaces "Equivalent to --self-contained false" with an expanded description that explains the option creates a framework-dependent application