Question about the second example of the readme.txt

[LaurentDardenne]

I do not understand the description of the second example of the readme.txt :

Using powershell on Windows. pwsh also works and is the default.

on: [push]

jobs:
  run-on-windows:
    runs-on: windows-latest
    steps:
    - uses: actions/checkout@v2
    - name: Install and cache PowerShell modules
      id: psmodulecache
      uses: potatoqualitee/psmodulecache@v4.5
      with:
        modules-to-cache: PSFramework, PoshRSJob, dbatools:1.0.0
    - name: Show that the Action works
      shell: pwsh
      run: |
          Get-Module -Name PSFramework, PoshRSJob, dbatools -ListAvailable | Select Path

The 'powershell' shell is not used and the shell parameter of the psmodulecache action is missing, by default the 'pswh' shell is used. Is this a mistake or do I need to improve my googlish?