Use lower case section as category

What does this MR do and why?

The section from in the approval rules return by https://gitlab.com/api/v4/projects/278964/merge_requests/215751/approval_state use title casing e.g Analytics Instrumentation. Since GitLab labels are case sensitive, these strings needs to be lower case to avoid danger messages with invalid labels.

Example:

This MR downcases the section when it is used as a category value.

MR acceptance checklist

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