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Description

The quickstart doc should be updated to use  standard Flink docker image instead of fluss-quickstart-flink image which include a conflict json version introduced by Paimon.
#1997 already update Real-Time Analytics With Flink part to use standard Flink docker image, but Building a Streaming Lakehouse should also use standard Flink docker image

Willingness to contribute

• I'm willing to submit a PR!