Fix localization strings

[johlju]

Pull Request (PR) description

• SqlAudit
  • Fix localization strings in Assert method.
• Save-SqlDscSqlServerMediaFile
  • Fix localizations strings that used wrong keys.

This Pull Request (PR) fixes the following issues

None. DUe to changes in DscResource.Test.

Task list

• Added an entry to the change log under the Unreleased section of the
  file CHANGELOG.md. Entry should say what was changed and how that
  affects users (if applicable), and reference the issue being resolved
  (if applicable).
• Resource documentation updated in the resource's README.md.
• Resource parameter descriptions updated in schema.mof.
• Comment-based help updated, including parameter descriptions.
• Localization strings updated.
• Examples updated.
• Unit tests updated. See DSC Community Testing Guidelines.
• Integration tests updated (where possible). See DSC Community Testing Guidelines.
• Code changes adheres to DSC Community Style Guidelines.

---

This change is 

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94%. Comparing base (85ea1ed) to head (23d7eb1).
Report is 12 commits behind head on main.

Additional details and impacted files

@@         Coverage Diff          @@
##           main   #2062   +/-   ##
====================================
  Coverage    94%     94%           
====================================
  Files        94      94           
  Lines      7930    7926    -4     
====================================
  Hits       7500    7500           
+ Misses      430     426    -4     

Flag	Coverage Δ
unit	90% <100%> (-5%)	⬇️

Files with missing lines	Coverage Δ
source/Classes/020.SqlAudit.ps1	100% <100%> (+<1%)	⬆️
...ces/DSC_SqlConfiguration/DSC_SqlConfiguration.psm1	100% <100%> (ø)
...urces/DSC_SqlDatabaseUser/DSC_SqlDatabaseUser.psm1	100% <100%> (ø)
...urce/DSCResources/DSC_SqlMaxDop/DSC_SqlMaxDop.psm1	100% <100%> (ø)
...urce/DSCResources/DSC_SqlMemory/DSC_SqlMemory.psm1	100% <100%> (ø)
...ce/DSCResources/DSC_SqlRSSetup/DSC_SqlRSSetup.psm1	100% <100%> (ø)
...sources/DSC_SqlReplication/DSC_SqlReplication.psm1	65% <100%> (ø)
...s/DSC_SqlServiceAccount/DSC_SqlServiceAccount.psm1	98% <100%> (ø)
source/Public/Save-SqlDscSqlServerMediaFile.ps1	84% <100%> (ø)

... and 3 files with indirect coverage changes

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[johlju]

Reviewed 9 of 10 files at r1, 4 of 4 files at r2, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @johlju)