Simplify "How to build" section, fix indentation on "Open ILSpy.sln in Visual Studio"

.vsconfig

@@ -1,22 +0,0 @@
-{
-  "version": "1.0",
-  "components": [
-    "Microsoft.VisualStudio.Component.CoreEditor",
-    "Microsoft.VisualStudio.Workload.CoreEditor",
-    "Microsoft.NetCore.Component.Runtime.6.0",
-    "Microsoft.NetCore.Component.SDK",
-    "Microsoft.VisualStudio.Component.NuGet",
-    "Microsoft.VisualStudio.Component.Roslyn.Compiler",
-    "Microsoft.VisualStudio.Component.Roslyn.LanguageServices",
-    "Microsoft.Net.Component.4.8.SDK",
-    "Microsoft.Net.Component.4.7.2.TargetingPack",
-    "Microsoft.Net.ComponentGroup.DevelopmentPrerequisites",
-    "Microsoft.Component.MSBuild",
-    "Microsoft.VisualStudio.Component.ManagedDesktop.Core",
-    "Microsoft.VisualStudio.Component.ManagedDesktop.Prerequisites",
-    "Microsoft.VisualStudio.Workload.ManagedDesktop",
-    "Microsoft.VisualStudio.Component.VSSDK",
-    "Microsoft.VisualStudio.ComponentGroup.VisualStudioExtension.Prerequisites",
-    "Microsoft.VisualStudio.Workload.VisualStudioExtension"
-  ]
-}

README.md

@@ -47,12 +47,9 @@ How to build
 - Make sure Windows PowerShell (at least version) 5.0 or [PowerShell](https://github.com/PowerShell/PowerShell) 7+ is installed.
 - Clone the ILSpy repository using git.
 - Execute `git submodule update --init --recursive` to download the ILSpy-Tests submodule (used by some test cases).
-- Install Visual Studio (documented version: 18.0). You can install the necessary components in one of 3 ways:
-  - Follow Microsoft's instructions for [importing a configuration](https://docs.microsoft.com/en-us/visualstudio/install/import-export-installation-configurations?view=vs-2022#import-a-configuration), and import the .vsconfig file located at the root of the solution.
-  - Alternatively, you can open the ILSpy solution (ILSpy.sln) and Visual Studio will [prompt you to install the missing components](https://docs.microsoft.com/en-us/visualstudio/install/import-export-installation-configurations?view=vs-2022#automatically-install-missing-components).
-  - Finally, you can manually install the necessary components via the Visual Studio Installer. The workloads/components are as follows:
-    - Workload ".NET Desktop Development". This workload includes the .NET Framework 4.8 SDK and the .NET Framework 4.7.2 targeting pack, as well as the [.NET 10.0 SDK](https://dotnet.microsoft.com/download/dotnet/10.0) (ILSpy.csproj targets .NET 10.0, but we have net472 projects too). _Note: The optional components of this workload are not required for ILSpy_
-    - Workload "Visual Studio extension development" (ILSpy.sln contains a VS extension project) _Note: The optional components of this workload are not required for ILSpy_
+- Install Visual Studio (documented version: 18.0/2026). You need the following workload components:
+  - Workload ".NET Desktop Development". This workload includes the .NET Framework 4.8 SDK and the .NET Framework 4.7.2 targeting pack, as well as the [.NET 10.0 SDK](https://dotnet.microsoft.com/download/dotnet/10.0) (ILSpy.csproj targets .NET 10.0, but we have net472 projects too).
+  - Workload "Visual Studio extension development" (Note: ILSpy.VSExtensions.sln is separate from ILSpy.sln and thus this workload is optional)
   - Individual Component "MSVC v143 - VS 2022 C++ x64/x86 build tools" (or similar)
     - _The VC++ toolset is optional_; if present it is used for `editbin.exe` to modify the stack size used by ILSpy.exe from 1MB to 16MB, because the decompiler makes heavy use of recursion, where small stack sizes lead to problems in very complex methods.
 - Open ILSpy.sln in Visual Studio.