Fix comment in manifest doc #9947

Job	Run time
Run integration tests (test-e2e)	20m 28s
Run integration tests (test-integration-poller)	9m 56s
Run integration tests (test-e2e-deployments)	13m 26s
Run integration tests (test-e2e-serverless)	7m 24s
Lint	3m 28s
Run Unit Tests (test-with-cover-pkg)	3m 34s
Run Unit Tests (test-with-cover-tempodb)	16m 35s
Benchmark	9m 29s
Run Unit Tests (test-with-cover-tempodb-wal)	11m 15s
Run Unit Tests (test-with-cover-others)	13m 19s
Build	1m 53s
Build technical documentation	18s
Check jsonnet & tempo-mixin	52s
Vendor check	1m 20s
	1h 53m 17s

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