Add missing --source option to dotnet tool exec documentation

[Copilot]

Summary

The dotnet tool exec documentation was missing the --source CLI option that appears in dotnet tool exec --help output. The --configfile option mentioned in the issue was already documented.

Changes:

• Added [--source <SOURCE>] to the synopsis section
• Added the --source option description in an includes file cli-tool-source
• Also added the missing option to: dotnet tool install and dotnet tool update

Original prompt

---

This section details on the original issue you should resolve

<issue_title>dotnet tool exec missing CLI options for NuGet config file and NuGet sources</issue_title>
<issue_description>### Type of issue

Missing information

Description

In dotnet/sdk#51994 @afscrome noted that --configfile and --source are missing from this page. We should fill them in, and their content should be the same as those options on the other dotnet tool commands.

[Enter feedback here]

Page URL

https://learn.microsoft.com/en-us/dotnet/core/tools/dotnet-tool-exec

Content source URL

https://github.com/dotnet/docs/blob/main/docs/core/tools/dotnet-tool-exec.md

Document Version Independent Id

13f795eb-782f-93a4-e6b8-b071a00035fc

Platform Id

0562cb37-b84b-cd5e-946f-2fed3e5e0619

Article author

@meaghanlewis

Metadata

• ID: 2e0c9772-2db2-9893-4f52-8d55db948269
• PlatformId: 0562cb37-b84b-cd5e-946f-2fed3e5e0619
• Service: dotnet-fundamentals

Related Issues

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Associated WorkItem - 537545</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes dotnet tool exec missing CLI options for NuGet config file and NuGet sources #50334

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Internal previews

📄 File	🔗 Preview link
docs/core/tools/dotnet-tool-exec.md	dotnet tool exec
docs/core/tools/dotnet-tool-install.md	dotnet tool install command
docs/core/tools/dotnet-tool-update.md	dotnet tool update

[Copilot]

Pull request overview

This PR adds the missing --source CLI option to the dotnet tool exec documentation, addressing issue #50334. The --configfile option mentioned in the issue was already documented.

Key changes:

• Added [--source <SOURCE>] to the Synopsis section
• Added the --source option description in the Options section