Change report_type to type in report API docs

Editor assessment

The subject is exact about the edit: the report API documentation's report_type parameter was renamed to type. Nothing about the change requires a diff, and the scope of the edit is embedded in the sentence itself. Fix is a tolerable label for a documentation correction even though docs would be the natural type; the mismatch does not mislead. No body is present and none is needed for a rename of this size. Hygiene is good — imperative, period-free, compact — and the trailing PR reference is conventional. A clear, complete small-change message.