dotnet-svcutil 2.x requires .NET 5.0 runtime

[okumura-pico]

dotnet-svcutil 2.x does not work with .NET Core 2.2 and .NET 6.0.

dotnet-svcutil 2.x depends on Microsoft.NETCore.App 5.0.0 package, so it may work with only .NET 5.0.

Patch is the following

--- dotnet-svcutil-guide.md.orig	2022-09-15 14:37:21.968561427 +0900
+++ dotnet-svcutil-guide.md	2022-09-15 14:38:11.836903091 +0900
@@ -21,7 +21,7 @@
 
 # [dotnet-svcutil 2.x](#tab/dotnetsvcutil2x)
 
-- [.NET Core 2.1 SDK](https://dotnet.microsoft.com/download) or later versions
+- [.NET 5.0 Runtime](https://dotnet.microsoft.com/download)
 - Your favorite code editor
 
 # [dotnet-svcutil 1.x](#tab/dotnetsvcutil1x)

---

Document Details

⚠ Do not edit this section. It is required for docs.microsoft.com ➟ GitHub issue linking.

• ID: 3d0bd854-fec8-fc4a-760a-42dc22e07f99
• Version Independent ID: f04e9f8b-24d2-79fb-7521-6222c434e80f
• Content: WCF svcutil tool overview - .NET
• Content Source: docs/core/additional-tools/dotnet-svcutil-guide.md
• Product: dotnet-fundamentals
• GitHub Login: @HongGit
• Microsoft Alias: dotnetcontent