[docs] Update triage guidelines.
[docs] Update triage guidelines.

Doc: http://go/chrome-devtools-bug-tracking-v3
Bug: none
Change-Id: I4e01bcf1fcb6255ba228ef272652dbf279eaa584
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/3745381
Auto-Submit: Benedikt Meurer <024a1e0af501338d11c3b837c6193d11c140d792@chromium.org>
Reviewed-by: Mathias Bynens <17a2cbc4e33156874a9862b0f530521117e66a3d@chromium.org>
Commit-Queue: Mathias Bynens <17a2cbc4e33156874a9862b0f530521117e66a3d@chromium.org>

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