Some minor README.md corrections. (dotnet#2116)

Author: alexrp

README.md

@@ -73,24 +73,26 @@ In addition, the Silk.NET working group help drive larger user-facing changes pr
 
 <h1 align="center">Building from source</h1>
 
-Prerequisites
+**Prerequisites**
+
 - .NET 6 SDK and .NET 7 SDK
 - Android, iOS, and Mac Catalyst workloads (use `dotnet workload install android ios maccatalyst` to install them)
     - On Linux, `ios` and `maccatalyst` should be omitted as they are not available
-- Android SDK version 30 with NDK tools installed
-    - On Windows, for best results this should be installed into `C:\ProgramData\Android\android-sdk`
-- Java 11 JDK
+- Android SDK versions 31, 33, and 34 with NDK tools installed
+    - On Windows, for best results, this should be installed into `C:\ProgramData\Android\android-sdk`
+- Java JDK 11+
 - Visual Studio 2022 Community version 17.0 or later (optional)
 
-Instructions
-- Clone the repository (recursively)
-- Run build.sh, build.cmd, build.ps1, or `nuke compile`.
-    - On Linux, you may need to pass `--msbuild-properties AndroidSdkDirectory=/path/to/android/sdk`
-- Use the DLLs. To get nupkgs you can use with NuGet instead, use `nuke pack`.
+**Instructions**
 
-There are more advanced build actions you can do too, such as FullBuild, Pack, FullPack, among others which you can view by doing `nuke --plan`.
+- Clone the repository
+    - Note: Avoid performing a recursive clone as the submodules are not necessary for a normal build
+- Run `build.sh`, `build.cmd`, `build.ps1`, or `nuke compile`
+    - On Linux, you may need to pass `--msbuild-properties AndroidSdkDirectory=/path/to/android/sdk`
+- Use the built assemblies
+    - To get `.nupkg`s that you can use with NuGet instead, use `nuke pack`
 
-Note: Some .NET 6 workloads are only supported on Windows and macOS today.
+There are more advanced build actions you can do too, such as `FullBuild`, `Pack`, `FullPack`, among others which you can view by doing `nuke --plan`.
 
 <h1 align="center">Contributing</h1>