[EDA] Wrong help text for Variables field for Rulebook Activations

[kurokobo]

In the current implementation, the help for Variables field for Rulebook Activations shows following text:

Pass extra command line variables to the playbook. This is the -e or --extra-vars command line parameter for ansible-playbook. Provide key/value pairs using either YAML or JSON. Refer to the documentation for example syntax.

In my understanding, this is wrong description for this field.

This is the fileld that defines variables for ansible-rulebook instead of ansible-playbook.
It's not equivalent to -e or --extra-vars command line parameter for ansible-playbook but contents of the file that passed via --vars for ansible-rulebook: https://ansible.readthedocs.io/projects/rulebook/en/stable/variables.html

This should be corrected.