Update documentation to enable test connection

[vatsrahul1001]

with PR now testing connections is disabled by default, few docs were not updated with that information this PR is to update docs

^ Add meaningful description above
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[boring-cyborg]

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[uranusjr]

This file is generated from openapi/v1.yaml and you should not modify it correctly. Modify the specification file instead and use pre-commit to sync the files instead. See the contribution guide located in the repository root to learn how to set up the dev toolchain.

[potiuk]

Can you please also add the disclaimers from the release notes. Something alongside this:

For security reasons, the test connection functionality is disabled by default across Airflow UI, API and CLI. 

For more information on capabilities of users, see the documentation: 
https://airflow.apache.org/docs/apache-airflow/stable/security/security_model.html#capabilities-of-authenticated-ui-users.
It is strongly advised to not enable the feature until you make sure that only
highly trusted UI/API users have “edit connection” permissions.

[uranusjr]

Suggested change

	description: |
	Test a connection.
	Testing Connections is disabled by default set test_connection flag to enabled in Airflow configuration (airflow.cfg).
	It can also be controlled by the environment variable AIRFLOW__CORE__TEST_CONNECTION.
	description: >
	Test a connection.
	Testing Connections is disabled by default set test_connection flag to enabled in Airflow configuration (airflow.cfg).
	It can also be controlled by the environment variable `AIRFLOW__CORE__TEST_CONNECTION`.

This fixes the rendering issues in the generated ts comment. (Don’t apply this on GitHub, you need to do this locally to go through pre-commit)

[uranusjr]

Did you forget to run the changes through pre-commit?

[vatsrahul1001]

Did you forget to run the changes through pre-commit?

I did run pre-commit, let me check again

[uranusjr]

Pending CI

[boring-cyborg]

Awesome work, congrats on your first merged pull request! You are invited to check our Issue Tracker for additional contributions.