`azdev repo add` doesn't work if directory isn't named `azure-cli-extensions`

While attempting to perform `azdev extension create `, I run into the following error:

```
(env) PS C:\Users\joinnis.REDMOND\github\azure-arc-extensions> azdev extension create k8s-config
Unable to find `azure-cli-extensions` repo. Have you cloned it and added with `azdev extension repo add`?
```
If I attempt to add a local git repository that doesn't have the name `azure-cli-extensions` the command will always fail, even if the local repo is a valid repository