fix: correct Slack integration condition to display documentation whe… #8039

Job	Run time
compile-accounts	38s
compile-app	46s
compile-common	43s
compile-home	43s
compile-isolated-vm	35s
compile-worker	43s
compile-workflow	42s
compile-api-reference	40s
compile-admin-dashboard	49s
compile-copilot	39s
compile-dashboard	1m 11s
compile-docs-reference	40s
compile-e2e	1m 18s
compile-incoming-request-ingest	41s
compile-nginx	37s
compile-infrastructure-agent	23s
compile-open-telemetry-ingest	41s
compile-probe-ingest	41s
compile-probe	35s
compile-server-monitor-ingest	39s
compile-fluent-ingest	38s
compile-status-page	43s
compile-test-server	36s
	16m 21s

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