[skip ci] Update the methodology of seeding
MODIFY
WalletWasabi.Documentation/ClientDeployment.md
WalletWasabi.Documentation/ClientDeployment.md
# 1. Packaging
0. Make sure local .NET Core version is up to date.
-1. Update onion seed list: `dotnet run -- --getonions`
+1. Update the onion seed list to the most reliable ones: `dotnet run -- --reduceonions`
2. Run tests.
3. Dump client version.
4. Run packager in publish mode.

[skip ci] Update the methodology of seeding