Update OpenAPI specs (#166)

Signed-off-by: GitHub <[email protected]>
Co-authored-by: nhtruong <[email protected]>

Author: opensearch-trigger-bot[bot]

OpenSearch.openapi.json

@@ -26671,7 +26671,9 @@
                         "description": "Specify the keep alive for point in time.",
                         "schema": {
                             "type": "string",
-                            "description": "Specify the keep alive for point in time."
+                            "pattern": "^([0-9]+)(?:d|h|m|s|ms|micros|nanos)$",
+                            "description": "Specify the keep alive for point in time.",
+                            "x-data-type": "time"
                         }
                     },
                     {
@@ -30719,7 +30721,7 @@
                     "pit_id": {
                         "type": "string"
                     },
-                    "_shard": {
+                    "_shards": {
                         "$ref": "#/components/schemas/ShardStatistics"
                     },
                     "creation_time": {