[DOCS] Add query rule operation summaries (#3219)

Author: lcawl

output/openapi/elasticsearch-openapi.json

@@ -415,6 +415,7 @@ query-dsl-weighted-tokens-query,https://www.elastic.co/guide/en/elasticsearch/re
 query-dsl-wildcard-query,https://www.elastic.co/guide/en/elasticsearch/reference/{branch}/query-dsl-wildcard-query.html
 query-dsl-wrapper-query,https://www.elastic.co/guide/en/elasticsearch/reference/{branch}/query-dsl-wrapper-query.html
 query-dsl,https://www.elastic.co/guide/en/elasticsearch/reference/{branch}/query-dsl.html
+query-rule,https://www.elastic.co/guide/en/elasticsearch/reference/{branch}/search-using-query-rules.html
 realtime,https://www.elastic.co/guide/en/elasticsearch/reference/{branch}/docs-get.html#realtime
 redact-processor,https://www.elastic.co/guide/en/elasticsearch/reference/{branch}/redact-processor.html
 regexp-syntax,https://www.elastic.co/guide/en/elasticsearch/reference/{branch}/regexp-syntax.html

output/openapi/elasticsearch-serverless-openapi.json

@@ -20,7 +20,8 @@ import { RequestBase } from '@_types/Base'
 import { Id } from '@_types/common'
 
 /**
- * Deletes a query rule within a query ruleset.
+ * Delete a query rule.
+ * Delete a query rule within a query ruleset.
  * @rest_spec_name query_rules.delete_rule
  * @availability stack since=8.15.0 stability=stable
  * @availability serverless stability=stable visibility=public