Say when pagination links can be missing

- Some page-number lists never include next or prev links, so the next link description now says to compare page with total_pages.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

Author: cathalging

descriptions/0/api.intercom.io.yaml

@@ -43763,8 +43763,9 @@ components:
         next:
           type: string
           format: uri
-          description: A link to the next page of results. A response that does not
-            contain a next link does not have further data to fetch.
+          description: A link to the next page of results. Omitted on the last page.
+            Some lists never include `next` or `prev`, so compare `page` with `total_pages`
+            to tell whether more pages remain.
           nullable: true
         prev:
           type: string

descriptions/2.17/api.intercom.io.yaml

@@ -38404,8 +38404,9 @@ components:
         next:
           type: string
           format: uri
-          description: A link to the next page of results. A response that does not
-            contain a next link does not have further data to fetch.
+          description: A link to the next page of results. Omitted on the last page.
+            Some lists never include `next` or `prev`, so compare `page` with `total_pages`
+            to tell whether more pages remain.
           nullable: true
         prev:
           type: string