Update README.md

Update to correct terminology

Co-authored-by: Andy Jordan <[email protected]>

Author: JustinGrote

README.md

@@ -177,7 +177,7 @@ Install-Module platyPS -Scope CurrentUser
 
 ### 4. Adjust `Nuget.Config` if necessary
 
-Our NuGet configuration uses a secure feed with whitelisted third party dependency packages. If your contribution requires any changes to the included NuGet packages, you must disable this secure feed.
+Our NuGet configuration uses a secure feed with allow-listed third party dependency packages. If your contribution requires any changes to the included NuGet packages, you must disable this secure feed.
 
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