Update estimate docs with realtime changes (#2495)

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

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

.apigentools-info

@@ -4,13 +4,13 @@
     "spec_versions": {
         "v1": {
             "apigentools_version": "1.6.6",
-            "regenerated": "2024-09-25 18:39:40.361154",
-            "spec_repo_commit": "1fa8186c"
+            "regenerated": "2024-09-26 19:34:40.400740",
+            "spec_repo_commit": "83debf9e"
         },
         "v2": {
             "apigentools_version": "1.6.6",
-            "regenerated": "2024-09-25 18:39:40.375874",
-            "spec_repo_commit": "1fa8186c"
+            "regenerated": "2024-09-26 19:34:40.414847",
+            "spec_repo_commit": "83debf9e"
         }
     }
 }

.generator/schemas/v2/openapi.yaml

@@ -32775,8 +32775,7 @@ paths:
         schema:
           type: string
       - description: The number of hours of look back (from now) to estimate cardinality
-          with. Estimates are based on historical data, and unspecified fields default
-          to the minimum 49 hours.
+          with. If unspecified, it defaults to 0 hours.
         example: 49
         in: query
         name: filter[hours_ago]
@@ -32805,7 +32804,7 @@ paths:
         schema:
           type: boolean
       - description: A window, in hours, from the look back to estimate cardinality
-          with.
+          with. The minimum and default is 1 hour.
         example: 6
         in: query
         name: filter[timespan_h]

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

@@ -683,8 +683,7 @@ public EstimateMetricsOutputSeriesOptionalParameters filterGroups(String filterG
      * Set filterHoursAgo.
      *
      * @param filterHoursAgo The number of hours of look back (from now) to estimate cardinality
-     *     with. Estimates are based on historical data, and unspecified fields default to the
-     *     minimum 49 hours. (optional)
+     *     with. If unspecified, it defaults to 0 hours. (optional)
      * @return EstimateMetricsOutputSeriesOptionalParameters
      */
     public EstimateMetricsOutputSeriesOptionalParameters filterHoursAgo(Integer filterHoursAgo) {
@@ -722,7 +721,7 @@ public EstimateMetricsOutputSeriesOptionalParameters filterPct(Boolean filterPct
      * Set filterTimespanH.
      *
      * @param filterTimespanH A window, in hours, from the look back to estimate cardinality with.
-     *     (optional)
+     *     The minimum and default is 1 hour. (optional)
      * @return EstimateMetricsOutputSeriesOptionalParameters
      */
     public EstimateMetricsOutputSeriesOptionalParameters filterTimespanH(Integer filterTimespanH) {