MINOR: specification: move confused field display name to description #1125

Job	Run time
generate-specification	49s
generate-models	1m 36s
HAProxy check commit message	0s
license-check	-1s
go mod tidy	-1s
golangci-lint	-1s
Build	-1s
Test equal	-1s
Tests	-1s
lint-spec	-1s
e2e on HAProxy	0s
	2m 18s

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