docs(moderation.md): fix moderation quick start docs

docs/my-website/docs/moderation.md

@@ -22,10 +22,19 @@ response = moderation(
 
 For `/moderations` endpoint, there is **no need to specify `model` in the request or on the litellm config.yaml**
 
-Start litellm proxy server 
+
+1. Setup config.yaml
+```yaml
+model_list:
+  - model_name: text-moderation-stable
+    litellm_params:
+      model: openai/omni-moderation-latest
+```
+
+2. Start litellm proxy server 
 
 ```
-litellm
+litellm --config /path/to/config.yaml
 ```
 
 
@@ -41,7 +50,7 @@ client = OpenAI(api_key="<proxy-api-key>", base_url="http://0.0.0.0:4000")
 
 response = client.moderations.create(
     input="hello from litellm",
-    model="text-moderation-stable" # optional, defaults to `omni-moderation-latest`
+    model="text-moderation-stable"
 )
 
 print(response)