Adds tech preview callout

Author: kosabogi

specification/inference/_types/CommonTypes.ts

@@ -1330,6 +1330,7 @@ export class ElasticsearchServiceSettings {
    */
   num_threads: integer
   /**
+   * This parameter is in tech preview in 9.2.
    * Available only for the `rerank` task type using the Elastic reranker model.
    * Controls the strategy used for processing long documents during inference.
    *
@@ -1342,6 +1343,7 @@ export class ElasticsearchServiceSettings {
    */
   long_document_strategy?: string
   /**
+   * This parameter is in tech preview in 9.2.
    * Only for the `rerank` task type.
    * Limits the number of chunks per document that are sent for inference when chunking is enabled.
    * If not set, all chunks generated for the document are processed.