Broken link in `az vmss perform-maintenance` section

I think the following section contains a broken link (note the space before the dash between `virtual-` and `machine`;

> Operation on instances which are not eligible for perform maintenance will be failed. Please refer to best practices for more details: https://docs.microsoft.com/en-us/azure/virtual-machine-scale-sets/virtual- machine-scale-sets-maintenance-notifications.

And I expect that it should be:

> Operation on instances which are not eligible for perform maintenance will be failed. Please refer to best practices for more details: https://docs.microsoft.com/en-us/azure/virtual-machine-scale-sets/virtual-machine-scale-sets-maintenance-notifications.

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#### Document Details

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* ID: 0408c294-207a-2b72-7b93-e09121602b75
* Version Independent ID: 852cb67b-70c6-b811-3b0a-5d5b84b8a911
* Content: [az vmss](https://docs.microsoft.com/en-us/cli/azure/vmss?view=azure-cli-latest#az_vmss_perform_maintenance)
* Content Source: [latest/docs-ref-autogen/vmss.yml](https://github.com/MicrosoftDocs/azure-docs-cli/blob/master/latest/docs-ref-autogen/vmss.yml)
* Service: **virtual-machine-scale-sets**
* GitHub Login: @rloutlaw
* Microsoft Alias: **routlaw**