Change field processingGuarantee to processingGuarantees for WindowConfig #730

Job	Run time
integration (integration test, .ci/tests/integration/e2e.yaml)	47m 51s
integration (integration test, .ci/tests/integration/e2e.yaml)	49m 2s
integration (integration test with tls, .ci/tests/integration/e2e_with_tls.yaml)	31m 1s
integration (integration test with tls, .ci/tests/integration/e2e_with_tls.yaml)	31m 1s
integration (integration test with oauth2, .ci/tests/integration-oauth2/e2e.yaml)	32m 35s
integration (integration test with oauth2, .ci/tests/integration-oauth2/e2e.yaml)	32m 35s
integration (integration test with downloader, .ci/tests/integration-oauth2/e2e_with_downloader.y...	21m 16s
integration (integration test with downloader, .ci/tests/integration-oauth2/e2e_with_downloader.y...	21m 16s
	4h 26m 37s

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