[Doc] update iotdb document

[liunaijie]

Purpose of this pull request

1. close [Bug] [Docs] IoTDB Source example error #5399
2. update document format to v2
3. move host,port config as they duplicated with node_url config and node_url is required.

Check list

• Code changed are covered with tests, or it does not need tests for reason:
• If any new Jar binary package adding in your PR, please add License Notice according
  New License Guide
• If necessary, please update the documentation to describe the new feature. https://github.com/apache/seatunnel/tree/dev/docs
• If you are contributing the connector code, please check that the following files are updated:
  1. Update change log that in connector document. For more details you can refer to connector-v2
  2. Update plugin-mapping.properties and add new connector information in it
  3. Update the pom file of seatunnel-dist
• Update the release-note.

[liunaijie]

@hailin0 PTAL

[zhilinli123]

Hi @liunaijie Would you like to contribute v2.0 documentation to the Iotdb connector? I look forward to your contribution
issues：#4572
reference:https://github.com/apache/seatunnel/blob/dev/docs/en/connector-v2/source/Mysql.md
https://github.com/apache/seatunnel/blob/dev/docs/en/connector-v2/sink/Mysql.md

[liunaijie]

sure

[ruanwenjun]

LGTM, it's better to use v2.0 doc style as @zhilinli123 said.

[hailin0]

why delete？

[liunaijie]

the sink example, I only add 1 case (fakesource to iotdb)(also 1 case in source example, use iotdb to console)

the key_timestamp is optional, so i remove it.
for example data, remove some filed to keep consistent with example code.

[hailin0]

why delete？

[hailin0]

whl update ？

[liunaijie]

@hailin0 when i update the doc, i find in source, node_url is required, and host, port is optional. but they all represent same thing.
I see you recommend set host,port in single node, but in this case node_url is still need to fill. is this duplicate? i want update the code, remove host,port option.

[EricJoy2048]

We hope that there should be more examples in the document to demonstrate the scenarios in which different parameters are used. In general, we recommend at least three examples.

[liunaijie]

We hope that there should be more examples in the document to demonstrate the scenarios in which different parameters are used. In general, we recommend at least three examples.

updated

[ruanwenjun]

LGTM

[zhilinli123]

thanks contribution PTAL: @EricJoy2048