[cvas22]

Fixes #16676

Proposed Changes

• The activator-capacity comment in config/core/configmaps/autoscaler.yaml pointed to https://bit.ly/38XiCZ3, which redirects to a Google doc that is not publicly accessible. The link is replaced with a short description of how the activator subset size is computed, matching computeNumActivators in pkg/reconciler/autoscaling/kpa/kpa.go: 2 activators when the target burst capacity is 0, otherwise max(2, ceil(capacity / activator-capacity)), where capacity is ready pods times the per-pod total metric value, plus the target burst capacity when positive.
• Regenerated the knative.dev/example-checksum annotation with hash-gen (what hack/update-checksums.sh runs).

Comment-only change; no behaviour change.

Tests run locally (Windows, Go 1.26): go test ./pkg/autoscaler/config/... ./pkg/reconciler/autoscaling/config/... pass (with the testdata symlinks materialised, since Windows checks them out as plain files). TestNewConfig fails with the old checksum and passes with the regenerated one. Not run: the full unit suite, linters and e2e tests; relying on CI for those.

Disclosure: I prepared this change with the help of an AI coding assistant. I reviewed the diff and take responsibility for it.

Release Note

NONE

[knative-prow]

Hi @cvas22. Thanks for your PR.

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[knative-prow]

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