[FA] Fix minimum page value (#3371)

Co-authored-by: ci.datadog-api-spec <packages@datadoghq.com>

Author: api-clients-generation-pipeline[bot]

.generator/schemas/v2/openapi.yaml

@@ -59714,13 +59714,14 @@ paths:
         results.'
       operationId: ListFleetAgents
       parameters:
-      - description: Page number for pagination (must be greater than 0).
+      - description: Page number for pagination (starts at 0).
         in: query
         name: page_number
         required: false
         schema:
+          default: 0
           format: int64
-          minimum: 1
+          minimum: 0
           type: integer
       - description: Number of results per page (must be greater than 0 and less than
           or equal to 100).

src/main/java/com/datadog/api/client/v2/api/FleetAutomationApi.java

@@ -1437,7 +1437,7 @@ public static class ListFleetAgentsOptionalParameters {
     /**
      * Set pageNumber.
      *
-     * @param pageNumber Page number for pagination (must be greater than 0). (optional)
+     * @param pageNumber Page number for pagination (starts at 0). (optional, default to 0)
      * @return ListFleetAgentsOptionalParameters
      */
     public ListFleetAgentsOptionalParameters pageNumber(Long pageNumber) {