Fix: update Incident Management settings copy

What does this MR do?

A tiny MVC to update the Category:Incident Management settings copy for Alert integrations as per #323474 (closed), the documentation for this update can be found here: !55752 (merged)

Screenshots (strongly suggested)

Does this MR meet the acceptance criteria?

Conformity

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Availability and Testing

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Security

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Related to #323474 (closed)