CmdPal doc fixes and small tweaks

[chatasweetie]

• add reload screenshot
• add link to toolkit
• correct updating list of commands code
• add <> to extentionname in samples for better readability and accessabilty
• add Notes about diffs in code for using prior section development
• correct loading spinner sample code

[prmerger-automator]

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[learn-build-service-prod]

Learn Build status updates of commit 997a706:

⚠️ Validation status: warnings

File	Status	Preview URL	Details
hub/powertoys/command-palette/creating-an-extension.md	⚠️Warning		Details
hub/powertoys/command-palette/update-a-list-of-commands.md	⚠️Warning		Details
hub/images/command-palette/reload.png	✅Succeeded
hub/powertoys/command-palette/add-top-level-commands-to-your-extension.md	✅Succeeded
hub/powertoys/command-palette/adding-commands.md	✅Succeeded
hub/powertoys/command-palette/command-results.md	✅Succeeded
hub/powertoys/command-palette/using-markdown-content.md	✅Succeeded

hub/powertoys/command-palette/creating-an-extension.md

• Line 60, Column 13: [Warning: disallowed-html-tag - See documentation] HTML tag 'ExtensionName' isn't allowed. Replace it with approved Markdown or escape the brackets if the content is a placeholder.
• Line 77, Column 1: [Suggestion: image-structure-incorrect - See documentation] Invalid image path 'images/command-palette/reload.png'. Images should be placed in a /media folder adjacent to the file where they are rendered, and in a subfolder matching the article name.

hub/powertoys/command-palette/update-a-list-of-commands.md

• Line 18, Column 253: [Warning: hard-coded-locale - See documentation] Link 'https://learn.microsoft.com/en-us/windows/powertoys/command-palette/microsoft-commandpalette-extensions-toolkit/microsoft-commandpalette-extensions-toolkit' contains locale code 'en-us'. For localizability, remove 'en-us' from links to most Microsoft sites.
• Line 18, Column 253: [Suggestion: docs-link-absolute - See documentation] Absolute link 'https://learn.microsoft.com/en-us/windows/powertoys/command-palette/microsoft-commandpalette-extensions-toolkit/microsoft-commandpalette-extensions-toolkit' will be broken in isolated environments. Replace with a relative link.

For more details, please refer to the build report.

Note: Your PR may contain errors or warnings or suggestions unrelated to the files you changed. This happens when external dependencies like GitHub alias, Microsoft alias, cross repo links are updated. Please use these instructions to resolve them.

[alvinashcraft]

Some suggestions and a question inline. Thanks for this PR!

[learn-build-service-prod]

Learn Build status updates of commit 39c9bc2:

💡 Validation status: suggestions

File	Status	Preview URL	Details
hub/powertoys/command-palette/creating-an-extension.md	💡Suggestion		Details
hub/images/command-palette/reload.png	✅Succeeded
hub/powertoys/command-palette/add-top-level-commands-to-your-extension.md	✅Succeeded
hub/powertoys/command-palette/adding-commands.md	✅Succeeded
hub/powertoys/command-palette/command-results.md	✅Succeeded
hub/powertoys/command-palette/update-a-list-of-commands.md	✅Succeeded
hub/powertoys/command-palette/using-markdown-content.md	✅Succeeded

hub/powertoys/command-palette/creating-an-extension.md

• Line 77, Column 1: [Suggestion: image-structure-incorrect - See documentation] Invalid image path 'images/command-palette/reload.png'. Images should be placed in a /media folder adjacent to the file where they are rendered, and in a subfolder matching the article name.

For more details, please refer to the build report.

Note: Your PR may contain errors or warnings or suggestions unrelated to the files you changed. This happens when external dependencies like GitHub alias, Microsoft alias, cross repo links are updated. Please use these instructions to resolve them.

[prmerger-automator]

PRMerger Results

Issue	Description
Added File(s)	This PR contains added files. New files require human review.
Image File	This PR added or updated an image file(s).

[alvinashcraft]

This looks good, @chatasweetie. Thanks again! Is there anything in here that needs to wait for the upcoming PowerToys release, or can I merge this now?

[chatasweetie]

none of this needs to wait, it's all on current external content,