Build notices have incorrect deploy URL

For feature branch continuous deploys, the build notices we get for these have the wrong URL in them. The console has the correct URL, where the slash in "feature/branchname" is converted to a dash, but the deploy notice emails keep the slash, and thus the URL is wrong. Here's an example of the email we get:

```
"Build notification from the AWS Amplify Console for app: https://feature/skeletal-html.changedforsecurity.amplifyapp.com/. Your build status is SUCCEED. Go to https://console.aws.amazon.com/amplify/home?region=us-east-2#changedforsecurity/feature/skeletal-html/1 to view details on your build. "
```

And the correct URL (as shown in the Amplify console) would be: https://feature-skeletal-html.changedforsecurity.amplifyapp.com/

Also, the quotes around that text in the email seem unnecessary :)

Start by reproducing a feature-branch continuous deploy and compare the deploy notice email with the URL shown in the AWS Amplify Console. Verify the branch slash is converted to a dash in the application URL and check whether the surrounding quotation marks are still present. Done means the email contains the same working deploy URL as the console and no unnecessary quotes.

Written by the indexing model from the issue text.