Remove System.CommandLine preview warning from all docs

Copilot · adamsitnik · Copilot · commit e1901f839706 · 2025-12-03T10:17:45.000Z
- Removed scl-preview include from index.md, get-started-tutorial.md,
  syntax.md, how-to-configure-the-parser.md,
  how-to-customize-parsing-and-validation.md, how-to-enable-tab-completion.md,
  how-to-parse-and-invoke.md, and migration-guide-2.0.0-beta5.md
- Deleted includes/preview.md file
- Removed empty includes folder

Co-authored-by: adamsitnik &lt;6011991+adamsitnik@users.noreply.github.com&gt;
diff --git a/docs/standard/commandline/get-started-tutorial.md b/docs/standard/commandline/get-started-tutorial.md
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 ---
 # Tutorial: Get started with System.CommandLine
 
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 This tutorial shows how to create a .NET command-line app that uses the [`System.CommandLine` library](index.md). You'll begin by creating a simple root command that has one option. Then you'll build on that base, creating a more complex app that contains multiple subcommands and different options for each command.
 
 In this tutorial, you learn how to:
diff --git a/docs/standard/commandline/how-to-configure-the-parser.md b/docs/standard/commandline/how-to-configure-the-parser.md
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 # How to configure the parser in System.CommandLine
 
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 Parsing and invocation are two separate steps, so each of them has their own configuration:
 
 - <xref:System.CommandLine.ParserConfiguration> is a class that provides properties to configure the parsing. It is an optional argument for every `Parse` method, such as <xref:System.CommandLine.Command.Parse*?displayProperty=nameWithType> and <xref:System.CommandLine.Parsing.CommandLineParser.Parse*?displayProperty=nameWithType>.
diff --git a/docs/standard/commandline/how-to-customize-parsing-and-validation.md b/docs/standard/commandline/how-to-customize-parsing-and-validation.md
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 # How to customize parsing and validation in System.CommandLine
 
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 By default, System.CommandLine provides a set of built-in parsers that can parse many common types:
 
 * `bool`
diff --git a/docs/standard/commandline/how-to-enable-tab-completion.md b/docs/standard/commandline/how-to-enable-tab-completion.md
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 # Tab completion for System.CommandLine
 
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 Apps that use `System.CommandLine` have built-in support for tab completion in certain shells. To enable it, the end user must take a few steps once per shell. Once this is done, tab completion is automatic for static values in your app, such as enum values or values defined by calling <xref:System.CommandLine.Option`1.AcceptOnlyFromAmong(System.String[])>. You can also customize tab completion by providing values dynamically at runtime.
 
 ## Enable tab completion
diff --git a/docs/standard/commandline/how-to-parse-and-invoke.md b/docs/standard/commandline/how-to-parse-and-invoke.md
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 # Parsing and invocation in System.CommandLine
 
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 System.CommandLine provides a clear separation between command-line parsing and action invocation. The *parsing process* is responsible for parsing command-line input and creating a <xref:System.CommandLine.ParseResult> object that contains the parsed values (and parse errors). The *action invocation process* is responsible for invoking the action associated with the parsed command, option, or directive (arguments can't have actions).
 
 In the following example from the [Get started with System.CommandLine](get-started-tutorial.md) tutorial, the `ParseResult` is created by parsing the command-line input. No actions are defined or invoked:
diff --git a/docs/standard/commandline/includes/preview.md b/docs/standard/commandline/includes/preview.md
diff --git a/docs/standard/commandline/index.md b/docs/standard/commandline/index.md
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 # System.CommandLine overview
 
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 The `System.CommandLine` library provides functionality commonly needed by command-line apps, such as parsing command-line input and displaying help text.
 
 Apps that use `System.CommandLine` include the [.NET CLI](../../core/tools/index.md), [additional tools](../../core/additional-tools/index.md), and many [global and local tools](../../core/tools/global-tools.md).
diff --git a/docs/standard/commandline/migration-guide-2.0.0-beta5.md b/docs/standard/commandline/migration-guide-2.0.0-beta5.md
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 # System.CommandLine 2.0.0-beta5+ migration guide
 
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 The main focus for the 2.0.0-beta5 release was to improve the APIs and take a step toward releasing a stable version of System.CommandLine. The APIs have been simplified and made more coherent and consistent with the [Framework design guidelines](../design-guidelines/index.md). This article describes the breaking changes that were made in 2.0.0-beta5 and 2.0.0-beta7, and the reasoning behind them.
 
 ## Renaming
diff --git a/docs/standard/commandline/syntax.md b/docs/standard/commandline/syntax.md
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 # Syntax overview: Commands, options, and arguments
 
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 This article explains the command-line syntax that `System.CommandLine` recognizes. The information is useful to both users and developers of .NET command-line apps, including the [.NET CLI](../../core/tools/index.md).
 
 ## Tokens
