refactor query

backend/spec/api.md

@@ -136,7 +136,7 @@ Notes:
 
 - Serves `GET /relays/:id/activity`
 - Authorizes admin or relay owner
-- Get activity from `query.list_activity_for_relay`
+- Get activity from `query.list_activity_for_resource`
 - Return `data` is `{activity}`
 
 ## `async fn deactivate_relay(...) -> Response`

backend/spec/query.md

@@ -39,7 +39,7 @@ Members:
 
 - Returns the tenant matching the given `stripe_customer_id`
 
-## `pub fn list_activity_for_relay(&self, relay_id: &str) -> Result<Vec<Activity>>`
+## `pub fn list_activity_for_resource(&self, relay_id: &str) -> Result<Vec<Activity>>`
 
 - Returns all activity where `resource_type = 'relay'` and `resource_id = relay_id`
 - Ordered newest-first