URL ending with "/" will generate files without filename (extension only, ex. .docx)

[catalan-adobe]

Description
Importing url such as https://www.aami.com.au/ will generate a.docx file which can be problematic on Mac (hidden file by default).

REMARK: the issue does not occur when using default import (no custom script) as the default generateDocumentPath handles the case and forces path / to /index (and thus index.docx).

For now, to fix the issue users have to implement the same strategy in there custom script.

What about enforcing this by default and not only in generateDocumentPath

To Reproduce
Steps to reproduce the behavior:

1. Start the AEM Importer
2. Setup a working dummy import script with a custom generateDocumentPath
3. Check "Save docx"
4. Import
   => on the filesystem, notice the generated file is named .docx

Expected behavior
In any configuration case, if we there is no value of generating a file named .docx, we should enforce / => /index tranformation

Version:
16.3.15