Add as a note the necessary parameter for indexer-security-init.sh when configuring the cluster with DNS name

[c-bordon]

This request arises from this community: https://groups.google.com/g/wazuh/c/OOrtG9XSX-M

You need to add a note at this step: https://documentation.wazuh.com/current/installation-guide/wazuh-indexer/step-by-step.html#cluster-initialization

For, in the case of configuring the cluster using DNS name, the command must be executed with the parameter: -ho

example: /usr/share/wazuh-indexer/bin/indexer-security-init.sh -ho wazuhindexer1.domain.name