4.60.3 Change the reference for .NET 7.

I noticed the strange  bug.
If I use the Nop 4.60.3 with the .NET 7.0.1
https://dotnet.microsoft.com/en-us/download/dotnet/thank-you/runtime-aspnetcore-7.0.1-windows-x64-installer

from this page
https://docs.nopcommerce.com/en/installation-and-upgrading/technology-and-system-requirements.html

I saw a lot of errors in nop logs (like this error)
System.IO.FileNotFoundException: Could not load file or assembly 'System.Net.WebHeaderCollection, Version=7.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The system cannot find the file specified.
File name: 'System.Net.WebHeaderCollection, Version=7.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'


I installed the new version
https://dotnet.microsoft.com/en-us/download/dotnet/thank-you/runtime-aspnetcore-7.0.5-windows-x64-installer

but I  think we could use the version 7.0.3
https://dotnet.microsoft.com/en-us/download/dotnet/thank-you/runtime-aspnetcore-7.0.3-windows-x64-installer

In fact, you can always use the most recent SDK and Runtime within the major .NET version number. I've updated the link in the documentation for the latest up-to-date version.

Thank you.