Remove 4th integer from AssemblyInformationalVersion

Author: AArnott

doc/dotnet.md

@@ -9,7 +9,7 @@ During the build it adds source code such as this to your compilation:
 ```csharp
 [assembly: System.Reflection.AssemblyVersion("1.0")]
 [assembly: System.Reflection.AssemblyFileVersion("1.0.24.15136")]
-[assembly: System.Reflection.AssemblyInformationalVersion("1.0.24.15136-alpha+g9a7eb6c819")]
+[assembly: System.Reflection.AssemblyInformationalVersion("1.0.24-alpha+g9a7eb6c819")]
 ```
 
 * The first and second integer components of the versions above come from the 
@@ -27,7 +27,7 @@ This class is also injected into your project at build time:
 internal sealed partial class ThisAssembly {
     internal const string AssemblyVersion = "1.0";
     internal const string AssemblyFileVersion = "1.0.24.15136";
-    internal const string AssemblyInformationalVersion = "1.0.24.15136-alpha+g9a7eb6c819";
+    internal const string AssemblyInformationalVersion = "1.0.24-alpha+g9a7eb6c819";
     internal const string AssemblyName = "Microsoft.VisualStudio.Validation";
     internal const string PublicKey = @"0024000004800000940000...reallylongkey..2342394234982734928";
     internal const string PublicKeyToken = "b03f5f7f11d50a3a";