beta: x-ms-docs-grouped-path for /drives/{drive-id}/items/{driveItem-id}/delta() contains invalid path

[MartinM85]

OpenAPI document for beta contains

'/drives/{drive-id}/items/{driveItem-id}/delta()':
description: Provides operations to call the delta method.
get:
tags:
- drives.Functions
summary: Invoke function delta
operationId: drives.drive.items.driveItem.delta-fa14
parameters:
...
responses:
2XX:
...
4XX:
...
5XX:
...
x-ms-docs-operation-type: function
x-ms-pageable:
nextLinkName: '@odata.nextLink'
operationName: listMore
parameters:
- name: drive-id
in: path
description: The unique identifier of drive
required: true
schema:
type: string
x-ms-docs-key-type: drive
- name: driveItem-id
in: path
description: The unique identifier of driveItem
required: true
schema:
type: string
x-ms-docs-key-type: driveItem
x-ms-docs-grouped-path:
- '/drives/{drive-id}/items/{driveItem-id}/delta(token=''{token}'')'
- '/drives/{drive-id}/items/{driveItem-id}/workbook/functions/delta'
- '/drives/{drive-id}/list/items/delta()'
- '/drives/{drive-id}/list/items/delta(token=''{token}'')'

The x-ms-docs-grouped-path /drives/{drive-id}/items/{driveItem-id}/workbook/functions/delta should not be there, because it's an endpoint for workbook function to test whether two numbers are equal.