Update API doc

Author: GitHub Actions Bot

components/doc/common/apidoc/index.json

@@ -5851,6 +5851,13 @@
                     "description": "Defines valid properties in ButtonGroup component.",
                     "relatedProp": "",
                     "props": [
+                        {
+                            "name": "children",
+                            "optional": true,
+                            "readonly": true,
+                            "type": "ReactNode",
+                            "description": "Used to get the child elements of the component."
+                        },
                         {
                             "name": "pt",
                             "optional": true,