[list events v2]Update params description to clarify unit (#2657)

Co-authored-by: ci.datadog-api-spec <[email protected]>

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

.apigentools-info

@@ -4,13 +4,13 @@
     "spec_versions": {
         "v1": {
             "apigentools_version": "1.6.6",
-            "regenerated": "2024-09-03 13:58:43.754442",
-            "spec_repo_commit": "ff772101"
+            "regenerated": "2024-09-03 14:58:47.933304",
+            "spec_repo_commit": "9e18747d"
         },
         "v2": {
             "apigentools_version": "1.6.6",
-            "regenerated": "2024-09-03 13:58:43.774050",
-            "spec_repo_commit": "ff772101"
+            "regenerated": "2024-09-03 14:58:47.951856",
+            "spec_repo_commit": "9e18747d"
         }
     }
 }

.generator/schemas/v2/openapi.yaml

@@ -27779,13 +27779,13 @@ paths:
         required: false
         schema:
           type: string
-      - description: Minimum timestamp for requested events.
+      - description: Minimum timestamp for requested events, in milliseconds.
         in: query
         name: filter[from]
         required: false
         schema:
           type: string
-      - description: Maximum timestamp for requested events.
+      - description: Maximum timestamp for requested events, in milliseconds.
         in: query
         name: filter[to]
         required: false