Fix old occurrences of QA::Support::Api (!68992) · Merge requests · GitLab.org / GitLab

What does this MR do?

The QA::Support::Api module was renamed to QA::Support::API in !68478 (merged) .

It appears that these references need to be updated to reflect the naming change.

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I have properly separated EE content from FOSS, or this MR is FOSS only. (Where should EE code go?)
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This MR does not harm performance, or I have asked a reviewer to help assess the performance impact. (Merge request performance guidelines)
I have followed the style guides.
This change is backwards compatible across updates, or this does not apply.