Fix Dataclass Doc about `dataclass_json` import problem #3902

Job	Run time
unpack-envvars	1s
flyteadmin integration tests image / build_docker	2m 43s
Build Images / Build & Push Image (flyteadmin) / Push to Github Registry	33s
Build Images / Build & Push Image (datacatalog) / Push to Github Registry	4m 17s
Build Images / Build & Push Image (flytecopilot) / Push to Github Registry	4m 5s
Build Images / Build & Push Image (flytepropeller) / Push to Github Registry	6m 1s
Build Images / Build & Push Image (flytescheduler) / Push to Github Registry	5m 34s
Dry Run Goreleaser	7m 40s
Test Getting started	4m 7s
Check Go Generate (datacatalog) / Go Generate	1m 30s
Check Go Generate (flyteadmin) / Go Generate	2m 7s
Check Go Generate (flytecopilot) / Go Generate	1m 24s
Check Go Generate (flytectl) / Go Generate	2m 14s
Check Go Generate (flytepropeller) / Go Generate	2m 17s
Lint (datacatalog) / Run Lint	2m 21s
Lint (flyteadmin) / Run Lint	3m 14s
Lint (flytectl) / Run Lint	2m 33s
Lint (flyteidl) / Run Lint	2m 1s
Lint (flyteplugins) / Run Lint	2m 55s
Lint (flytepropeller) / Run Lint	3m 16s
Lint (flytestdlib) / Run Lint	2m 29s
Unit Tests (datacatalog) / Run Unit Test	2m 52s
Unit Tests (flyteadmin) / Run Unit Test	4m 25s
Unit Tests (flytecopilot) / Run Unit Test	2m 31s
Unit Tests (flytectl) / Run Unit Test	3m 39s
Unit Tests (flyteplugins) / Run Unit Test	3m 58s
Unit Tests (flytestdlib) / Run Unit Test	3m 31s
Unit Tests (flytepropeller) / Run Unit Test	3m 59s
Integration Test (flyteadmin) / Integration tests	5m 56s
	1h 34m 13s

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