Update telemetry doc for AzureAppConfiguration (#9365)

Author: sebastienros

src/Components/Aspire.Microsoft.Extensions.Configuration.AzureAppConfiguration/AspireAppConfigurationExtensions.cs

@@ -16,7 +16,8 @@ namespace Microsoft.Extensions.Hosting;
 public static class AspireAppConfigurationExtensions
 {
     internal const string DefaultConfigSectionName = "Aspire:Microsoft:Extensions:Configuration:AzureAppConfiguration";
-
+    internal const string ActivitySourceName = "Microsoft.Extensions.Configuration.AzureAppConfiguration";
+    
     /// <summary>
     /// Adds the Azure App Configuration to be configuration in the <paramref name="builder"/>.
     /// </summary>
@@ -66,7 +67,7 @@ public static void AddAzureAppConfiguration(
         {
             builder.Services.AddOpenTelemetry()
                 .WithTracing(traceBuilder =>
-                    traceBuilder.AddSource(["Microsoft.Extensions.Configuration.AzureAppConfiguration"]));
+                    traceBuilder.AddSource(ActivitySourceName));
         }
     }
 }

src/Components/Telemetry.md

@@ -194,7 +194,7 @@ Aspire.Microsoft.Extensions.Configuration.AzureAppConfiguration
 - Log categories:
   "Microsoft.Extensions.Configuration.AzureAppConfiguration.Refresh"
 - Activity source names:
-  - none
+  - "Microsoft.Extensions.Configuration.AzureAppConfiguration"
 - Metric names:
   - none