docs: minor clarification on fields related to page range

Google APIs · copybara-github · commit 1953fb15745b · 2023-10-17T12:09:12.000-07:00
PiperOrigin-RevId: 574226437
diff --git a/google/cloud/documentai/v1/document_processor_service.proto b/google/cloud/documentai/v1/document_processor_service.proto
@@ -338,6 +338,7 @@ message ProcessOptions {
   // processed. NOTICE: If any of the page range is set, we will extract and
   // process only the given pages from the document. In the output document,
   // the page_number is referring to the page number in the original document.
+  // This config only applies to sync requests.
   oneof page_range {
     // Which pages to process (1-indexed).
     IndividualPageSelector individual_page_selector = 5;
