Upd modelConfig example (#827)

Author: taras-yemets

docs/cody/enterprise/model-config-examples.mdx

@@ -646,7 +646,7 @@ In the configuration above,
       "modelName": "claude-3-sonnet",
       "serverSideConfig": {
         "type": "awsBedrockProvisionedThroughput",
-        "arn": "<ARN>" // e.g., arn:aws:bedrock:us-west-2:548543007731:provisioned-model/47u2lgtk1rc1
+        "arn": "<ARN>" // e.g., arn:aws:bedrock:us-west-2:537452198621:provisioned-model/57z3lgkt1cx2
       },
       "contextWindow": {
         "maxInputTokens": 16000,