Apply suggestion from @dimodi

Co-authored-by: Dimo Dimov <[email protected]>

Author: 2 people

installation/nuget.md

@@ -101,7 +101,7 @@ To edit a `NuGet.Config` file and add the Telerik feed, you need to:
 
 1. Ensure you are editing the [correct and desired config file](https://learn.microsoft.com/en-us/nuget/consume-packages/configuring-nuget-behavior#config-file-locations-and-uses). You can also create a new one with the [`dotnet new nugetconfig` command](https://docs.microsoft.com/en-us/dotnet/core/tools/dotnet-new).
 
-2. Add the Telerik package source to the config file. For the authentication, use your [NuGet API key](#generate-a-nuget-api-key) as a password and `api-key` as a username. Here is an example of how your `NuGet.Config` file can look like:
+2. Add the Telerik package source to the config file. For the authentication, use your [NuGet API key](#generate-a-nuget-api-key) as a password and `api-key` as a username. Add the API key in plain text, because the .NET Core NuGet tooling does not fully support encrypted credentials. Here is an example of how your `NuGet.Config` file can look like:
 
 ````XML.skip-repl
 <?xml version="1.0" encoding="utf-8"?>