Please emphasise the distinct lack of "ansible_" prefix used in template syntax on the "Discovering variables" page

[HouzuoGuo]

The "Discovering variables" page suggests to use setup module to spell out all host facts:

anshot | SUCCESS => {
    "ansible_facts": {
        "ansible_all_ipv4_addresses": [...],
        "ansible_all_ipv6_addresses": [...]

It also illustrates the usage of host facts in an example: {{ ansible_facts['devices']['xvda']['model'] }}

Notably, the dictionary key omits the ansible_ prefix, even though the prefix shows up in the setup module output.

Please add a clarification on the page to emphasise that the lack of ansible_ prefix is working as implemented, and that users should avoid repeating the ansible_ prefix in template.

[ansible-documentation-bot[bot]]

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