Update resources-self-help-sql-on-demand.md

[zhenyxie]

find some issue which does not mentioned this the document. based on product group's suggestion, added into the document too.

[prmerger-automator[bot]]

@zhenyxie : Thanks for your contribution! The author(s) have been notified to review your proposed change.

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

Learn Build status updates of commit 91c1fb7:

:warning: Validation status: warnings

File	Status	Preview URL	Details
articles/synapse-analytics/sql/resources-self-help-sql-on-demand.md	:warning:Warning		Details

articles/synapse-analytics/sql/resources-self-help-sql-on-demand.md

• Line 1114, Column 48: [Warning: disallowed-html-tag - See documentation] HTML tag 'workspaceName' isn't allowed. Replace it with approved Markdown or escape the brackets if the content is a placeholder.

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[Court72]

@azaricstefan

Can you review the proposed changes? Note that the validation waring must be resolved before merging.

Important: When the changes are ready for publication, adding a #sign-off comment is the best way to signal that the PR is ready for the review team to merge.

label:"aq-pr-triaged"

@MicrosoftDocs/public-repo-pr-review-team