Add https related configuration for the HAProxy section

[fdalmaup]

Description

Closes wazuh/wazuh#23997. Adds the necessary configuration for the HAProxy Dataplane API and the haproxy_helper section to use https as the communication protocol.

Checks

Docs building

• Compiles without warnings.

Code formatting and web optimization

• Uses three spaces indentation.
• Adds or updates meta descriptions accordingly.
• Updates the redirects.js script if necessary (check this guide).

Writing style

• Uses present tense, active voice, and semi-formal registry.
• Uses short, simple sentences.
• Uses bold for user interface elements, italics for key terms or emphasis, and code font for Bash commands, file names, REST paths, and code.

[GGP1]

Suggested change

	user:
	- insecure: true
	user:
	- insecure: true

[fdalmaup]

This modification raises the following: configuration error: configuration file /etc/haproxy/dataplaneapi.yml not valid (only yaml format is supported): yaml: line 14: did not find expected '-' indicator
The suggested configuration follows the alignment mentioned in the official Dataplane repo example.

[GGP1]

Suggested change

	- :ref:`haproxy_protocol <haproxy_protocol>`: HTTPS protocol to use for the HAProxy Dataplane API communication.
	- :ref:`haproxy_protocol <haproxy_protocol>`: Protocol to use for the HAProxy Dataplane API communication. Must be ``https``.

[fdalmaup]

Changing the last sentence to It is recommended to set it to https since http is also allowed.

[GGP1]

I used must because this is the HTTPS tab, so in order to use an encrypted connection, setting HTTP doesn't work. But it's OK if you want to leave it like that