Correct dependency list export API URLs

What does this MR do?

Corrects Dependency List Export API example URLs. Two of the examples incorrectly have /security/ within the URL path for getting and downloading an export after it is created. This is not correct and will result in a 404 response.

This MR updates these examples to remove that string from the path, aligning it with the appropriate endpoint shown in the example response sections.

Related issues

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