add not available messages

Author: sdgilley

articles/ai-studio/how-to/develop/sdk-overview.md

@@ -334,7 +334,7 @@ You can use the project client to easily connect to the Azure AI evaluation serv
 pip install azure-ai-evaluation
 ```
 
-Using the ```project.scope``` parameter, we can instantiate a ```ViolenceEvaluator```:
+Using the `project.scope` parameter, we can instantiate a `ViolenceEvaluator`:
 
 ```Python
 from azure.ai.evaluation import ViolenceEvaluator
@@ -353,6 +353,8 @@ print(violence_score)
 
 ::: zone pivot="programming-language-csharp"
 
+Evaluation is not yet available in C#.
+
 ::: zone-end
 
 NOTE: to run violence evaluators your project needs to be in East US 2, Sweden Central, US North Central, France Central.
@@ -387,6 +389,8 @@ if application_insights_connection_string:
 
 ::: zone pivot="programming-language-csharp"
 
+Tracing is not yet available in C#.
+
 ::: zone-end
 
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