tiup ctl cdc does not work if a version is not specified

[ran-huang]

Error Report

Please answer the following questions before submitting your issue. Thanks!

1. What is the URL/path of the document related to this issue?

https://docs.pingcap.com/tidb/stable/replicate-data-to-kafka#step-2-create-a-changefeed

2. How would you like to improve it?

The command tiup ctl cdc does not work if a version of ctl is not specified.

TODO:

• [ ] Change tiup ctl cdc to tiup ctl:<cluster-version> cdc
• [ ] Check the commands of other ctl such as pdctl

[ran-huang]

Tracking the issue here. cc @shichun-0415 @leoppro

[ran-huang]

Another related issue: tiup ctl pd not working because no explicit version is given. Fixed in https://github.com/pingcap/docs-cn/pull/11881

I checked all tiup ctl ... commands in the documentation and found two types of issues:

1. No <cluster_version> is given. example
2. The <cluster_version> is not bumped to the latest version. example