Update OMP prompt tutorial to address common errors

[learn-build-service-prod[bot]]

Learn Build status updates of commit c9f385a:

:bulb: Validation status: suggestions

File	Status	Preview URL	Details
TerminalDocs/tutorials/custom-prompt-setup.md	:bulb:Suggestion	View	Details

TerminalDocs/tutorials/custom-prompt-setup.md

• Line 106, Column 126: [Suggestion: link-broken - See documentation] Link 'https://ohmyposh.dev/docs/configuration/overview#general-settings' points to a page that doesn't exist. Check the path or URL and update the link.

For more details, please refer to the build report.

Note: Links can become broken if there are changes on the target sites. If you think the validation result is a false alarm, please use SiteHelp with option 'Content authoring and publishing -> False alarm on broken link validation' to report.

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[learn-build-service-prod[bot]]

Learn Build status updates of commit 087ba33:

:bulb: Validation status: suggestions

File	Status	Preview URL	Details
TerminalDocs/tutorials/custom-prompt-setup.md	:bulb:Suggestion	View	Details

TerminalDocs/tutorials/custom-prompt-setup.md

• Line 106, Column 126: [Suggestion: link-broken - See documentation] Link 'https://ohmyposh.dev/docs/configuration/overview#general-settings' points to a page that doesn't exist. Check the path or URL and update the link.

For more details, please refer to the build report.

Note: Links can become broken if there are changes on the target sites. If you think the validation result is a false alarm, please use SiteHelp with option 'Content authoring and publishing -> False alarm on broken link validation' to 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.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel

[learn-build-service-prod[bot]]

Learn Build status updates of commit 5f1a77d:

:white_check_mark: Validation status: passed

File	Status	Preview URL	Details
TerminalDocs/tutorials/custom-prompt-setup.md	:white_check_mark:Succeeded	View

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel