fix: Updated test description (#1489)

## Description

Updated test description as it's misleading. Users should rather run the
`Set-AVMModule` tool, than the 'intenal' `Set-ModuleReadMe` script.

## Type of Change

<!-- Use the check-boxes [x] on the options that are relevant. -->

- [x] Update to CI Environment or utlities (Non-module effecting
changes)
- [ ] Azure Verified Module updates:
- [ ] Bugfix containing backwards compatible bug fixes, and I have NOT
bumped the MAJOR or MINOR version in `version.json`:
- [ ] Someone has opened a bug report issue, and I have included "Closes
#{bug_report_issue_number}" in the PR description.
- [ ] The bug was found by the module author, and no one has opened an
issue to report it yet.
- [ ] Feature update backwards compatible feature updates, and I have
bumped the MINOR version in `version.json`.
- [ ] Breaking changes and I have bumped the MAJOR version in
`version.json`.
  - [ ] Update to documentation

---------

Co-authored-by: Erika Gressi <[email protected]>

avm/utilities/pipelines/staticValidation/compliance/module.tests.ps1

@@ -324,7 +324,7 @@ Describe 'Module tests' -Tag 'Module' {
       }
 
       $mdFormattedDiff = ($diffReponse -join '</br>') -replace '\|', '\|'
-      $filesAreTheSame | Should -Be $true -Because ('The file hashes before and after applying the `Set-ModuleReadMe` function should be identical and should not have diff </br><pre>{0}</pre>. Please re-run the script for this module''s template.' -f $mdFormattedDiff)
+      $filesAreTheSame | Should -Be $true -Because ('The file hashes before and after applying the `/avm/utilities/tools/Set-AVMModule.ps1` and more precisely the `/avm/utilities/pipelines/sharedScripts/Set-ModuleReadMe.ps1` function should be identical and should not have diff </br><pre>{0}</pre>. Please re-run the `Set-AVMModule` function for this module.' -f $mdFormattedDiff)
     }
   }