docs: ai-rate-limit plugin expects limit even if rule.count is configured.

[saurav955]

Current State

In the ai-rate-limit plugin documentation it mentioned that limit is not required and "Required if rules is not configured." but while configuring the plugin it expects you to mention limit even if rule.count is configured.

Desired State

The documentation should make it clear under what circumstances limit is not mandatory.

[Baoyuantop]

@saurav955 From the screenshot, it looks like rules was configured under instances[0]. APISIX currently supports rules as a top-level ai-rate-limiting field, not as a per-instance field. If you use instances, each instance still needs its own name, limit, and time_window.

Could you try moving rules to the plugin top level? For example, plugins.ai-rate-limiting.rules rather than plugins.ai-rate-limiting.instances[0].rules.