docs(alerting.md): add alerting metadata to docs

docs/my-website/docs/proxy/alerting.md

@@ -32,41 +32,33 @@ Get a slack webhook url from https://api.slack.com/messaging/webhooks
 
 You can also use Discord Webhooks, see [here](#using-discord-webhooks)
 
-### Step 2: Update config.yaml 
 
-- Set `SLACK_WEBHOOK_URL` in your proxy env to enable Slack alerts.
-- Just for testing purposes, let's save a bad key to our proxy.
+Set `SLACK_WEBHOOK_URL` in your proxy env to enable Slack alerts.
+
+```bash
+export SLACK_WEBHOOK_URL="https://hooks.slack.com/services/<>/<>/<>"
+```
+
+### Step 2: Setup Proxy
 
 ```yaml
-model_list: 
-    model_name: "azure-model"
-    litellm_params:
-        model: "azure/gpt-35-turbo"
-        api_key: "my-bad-key" # 👈 bad key
-
 general_settings: 
     alerting: ["slack"]
     alerting_threshold: 300 # sends alerts if requests hang for 5min+ and responses take 5min+ 
-
-environment_variables:
-    SLACK_WEBHOOK_URL: "https://hooks.slack.com/services/<>/<>/<>"
-    SLACK_DAILY_REPORT_FREQUENCY: "86400"  # 24 hours; Optional: defaults to 12 hours
 ```
 
-
-### Step 3: Start proxy
-
+Start proxy 
 ```bash
 $ litellm --config /path/to/config.yaml
 ```
 
-## Testing Alerting is Setup Correctly
 
-Make a GET request to `/health/services`, expect to see a test slack alert in your provided webhook slack channel
+### Step 3: Test it!
 
-```shell
-curl -X GET 'http://localhost:4000/health/services?service=slack' \
-  -H 'Authorization: Bearer sk-1234'
+
+```bash
+curl -X GET 'http://0.0.0.0:4000/health/services?service=slack' \
+-H 'Authorization: Bearer sk-1234'
 ```
 
 ## Advanced - Redacting Messages from Alerts
@@ -84,7 +76,34 @@ litellm_settings:
 ```
 
 
+## Advanced - Add Metadata to alerts 
 
+Add alerting metadata to proxy calls for debugging. 
+
+```python
+import openai
+client = openai.OpenAI(
+    api_key="anything",
+    base_url="http://0.0.0.0:4000"
+)
+
+# request sent to model set on litellm proxy, `litellm --model`
+response = client.chat.completions.create(
+    model="gpt-3.5-turbo",
+    messages = [], 
+    extra_body={
+        "metadata": {
+            "alerting_metadata": {
+                "hello": "world"
+            }
+        }
+    }
+)
+```
+
+**Expected Response**
+
+<Image img={require('../../img/alerting_metadata.png')}/>
 
 ## Advanced - Opting into specific alert types