Incorrect Content Fragment Editor template name in code generation guide

### Is there an existing issue for this?

- [x] I have searched the existing issues

### Which topic?

https://developer.adobe.com/uix/docs/services/aem-cf-editor/code-generation/

### What's wrong with the content?

The page says to use `@adobe/aem-cf-admin-ui-ext-tpl` for the AEM Content Fragment Editor.

That package is for the Content Fragment Admin Console. The editor template should be `@adobe/aem-cf-editor-ui-ext-tpl`.

### What changes do you propose?

Change `@adobe/aem-cf-admin-ui-ext-tpl` to `@adobe/aem-cf-editor-ui-ext-tpl`.

### Anything else that can help to cover this?

The CLI output later on the same page already shows `@adobe/aem-cf-editor-ui-ext-tpl` for the Content Fragment Editor.

Open the code generation guide at https://developer.adobe.com/uix/docs/services/aem-cf-editor/code-generation/ and find `@adobe/aem-cf-admin-ui-ext-tpl` in the Content Fragment Editor instructions. Replace it with `@adobe/aem-cf-editor-ui-ext-tpl`, then verify the page consistently uses the editor template name and matches the CLI output shown later.

Written by the indexing model from the issue text.