Remove build pre-release tags and build metadata from service.version (#2274)

Author: reakaleek

src/api/Elastic.Documentation.Api.Infrastructure/OpenTelemetry/OpenTelemetryExtensions.cs

@@ -105,15 +105,18 @@ private static void ConfigureServiceVersionAttributes<TBuilder>(TBuilder builder
 		where TBuilder : IHostApplicationBuilder
 	{
 
-		var serviceVersion = Assembly.GetExecutingAssembly()
+		var informationalVersion = Assembly.GetExecutingAssembly()
 			.GetCustomAttribute<AssemblyInformationalVersionAttribute>()?.InformationalVersion;
 
-		if (serviceVersion is null)
+		if (informationalVersion is null)
 		{
 			Console.WriteLine($"Unable to determine service.version from {nameof(AssemblyInformationalVersionAttribute)}. Skipping setting it.");
 			return;
 		}
 
+		// Extract just major.minor.patch by removing prerelease tags (-) and build metadata (+)
+		var serviceVersion = informationalVersion.Split(['+', '-'])[0];
+
 		var versionAttribute = new KeyValuePair<string, object>("service.version", serviceVersion);
 
 		_ = builder.Services.ConfigureOpenTelemetryTracerProvider(tracerProviderBuilder =>