Clean some typos about IVM #502

Job	Run time
check-skip	1s
Build Apache Cloudberry	9m 39s
prepare-test-matrix	3s
RPM Install Test Apache Cloudberry	37s
ic-good-opt-off	24m 0s
ic-good-opt-on	29m 20s
ic-expandshrink	2m 58s
ic-singlenode	6m 57s
ic-resgroup-v2	16m 49s
ic-contrib	2m 3s
ic-gpcontrib	2m 20s
ic-fixme	1m 54s
ic-isolation2	21m 36s
ic-isolation2-crash	2m 58s
ic-parallel-retrieve-cursor	2m 39s
Generate Apache Cloudberry Build Report	1s
	2h 3m 55s

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