fix typo in script to cancel WUs #4850

Job	Run time
libs-build	2m 2s
client-build	2m 26s
apps-build	2m 19s
libs-vcpkg-build	2m 31s
apps-build-release	1m 33s
apps-x86-build-release	1m 44s
client-vcpkg-build	3m 5s
apps-arm64-build-release	6m 30s
apps-vcpkg-build	4m 0s
libs-cmake-build	2m 2s
libs-arm64-build	2m 51s
apps-arm64-build	7m 21s
manager-with-webview-vcpkg-build	8m 10s
server-build	4m 23s
manager-with-webview-build	6m 12s
manager-without-webview-build	5m 57s
unit-test-build	3m 40s
integration-test-build	5m 11s
	1h 11m 57s

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