Fix container template names in docs #3574

Job	Run time
unit	3m 28s
integration (v1.28.13, v0.53.5)	28m 24s
test-docker-build (base)	39s
integration (v1.28.13, v0.62.4)	28m 21s
test-docker-build (git)	1m 7s
integration (v1.31.0, v0.53.5)	28m 38s
integration (v1.31.0, v0.62.4)	28m 57s
test-docker-build (image-processing)	49s
test-docker-build (waiter)	35s
e2e (v1.28.13, v0.53.5)	21m 30s
e2e (v1.28.13, v0.62.4)	38m 9s
e2e (v1.31.0, v0.53.5)	33m 32s
e2e (v1.31.0, v0.62.4)	36m 4s
	4h 10m 13s

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