Update update_models.yml

Author: DerekMelchin

.github/workflows/update_models.yml

@@ -21,7 +21,7 @@ jobs:
 
       - name: Update models
         run: |-
-          datamodel-codegen --url https://raw.githubusercontent.com/QuantConnect/Documentation/refs/heads/master/QuantConnect-Platform-2.0.0.yaml --input-file-type openapi --output src/models.py --remove-special-field-name-prefix --use-annotated --collapse-root-models --use-default-kwarg
+          datamodel-codegen --url https://raw.githubusercontent.com/QuantConnect/Documentation/refs/heads/MCP-test/QuantConnect-Platform-2.0.0.yaml --input-file-type openapi --output src/models.py --remove-special-field-name-prefix --use-annotated --collapse-root-models --use-default-kwarg
           python post_processing.py
 
       - name: Push to Branch