Docs updates on 2022-04-29

github.com

• add config description for opentracing by TomShawn · Pull Request #8392 · pingcap/docs · GitHub opentracingを追加しています。

• Add three ticdc solution docs by shichun-0415 · Pull Request #8241 · pingcap/docs · GitHub Migrate from One TiDB Cluster to Another TiDB Cluster,Replicate Data Between Primary and Secondary Clusters,Replicate Data from TiDB to Kafkaを追加しています。