[Feature Request]: Expand on the documentation of the `Register-AzureDevOpsPipeline` script

### Description

In order to make the usage of the [utilities\tools\AzureDevOps\Register-AzureDevOpsPipeline.ps1](https://github.com/Azure/ResourceModules/blob/main/utilities/tools/AzureDevOps/Register-AzureDevOpsPipeline.ps1) script easier, we were asked to pad its documentation and be more 'explicit' on how to run it. For example, we should expand on the steps required to get to the parameters (such as the PAT token).