Add note on different certificates path for Kubernetes deployment in Okta documentation

[Rebits]

Description

In Okta integration documentation, the securityadmin script needs to be executed multiple times to apply changed configuration, for example:

export JAVA_HOME=/usr/share/wazuh-indexer/jdk/ && bash /usr/share/wazuh-indexer/plugins/opensearch-security/tools/securityadmin.sh -f /etc/wazuh-indexer/opensearch-security/config.yml -icl -key /etc/wazuh-indexer/certs/admin-key.pem -cert /etc/wazuh-indexer/certs/admin.pem -cacert /etc/wazuh-indexer/certs/root-ca.pem -h 127.0.0.1 -nhnv

However, these commands require specifying the path to certificates, which may vary depending on the environment (e.g., Kubernetes).

To further assist users, I recommend adding notes on how to customize the complete command based on their specific environment.