[catapult] - Set Infra>Labs component on perfbot docs.
[catapult] - Set Infra>Labs component on perfbot docs.

Sample: https://gist.github.com/simonhatch/0c58708636eb35cd52931596c174e0e1

Review-Url: https://codereview.chromium.org/1955563002
Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#391824}

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