The selector of the root component created by the ng add ng-alain command is not created according to the prefix configuration of the project

[jingxin2015]

Reproduction link

https://ng-alain-setup.stackblitz.io

Steps to reproduce

1. Use the following command to create an angular project

ng new my-app --prefix="my" --skip-git --skip-tests --style="less"

2. Execute the following command:

ng add ng-alain

3. The options during installation are as follows:

• Which default language would you like to use? 简体中文 (zh)
• Would you like to add code style plugin? (default: Y) Yes
• Would you like to add dynamic form (sf component) plugin? (default: Y) No
• Would you like to add mock plugin? (default: Y) Yes
• Would you like to add i18n plugin? (default: N) Yes

What is expected?

The selector of the app component is ‘my-root’

What is actually happening?

The selector of the app component is ‘app-root’

Environment	Info
ng-alain	12.2.2
Browser	Chrome 93.0.4577.63（正式版本） （64 位）

[jingxin2015]

I will deal with this issue.