fix project_slug error.

replace ml_pipeline with project_name or module_name from config

{{cookiecutter.project_name}}/{{cookiecutter.module_name}}/app/__init__.py

@@ -0,0 +1,11 @@
+from {{cookiecutter.module_name}} import config
+from fastapi import FastAPI, Response
+import logging
+import uvicorn
+
+app = FastAPI()
+
+logger = logging.getLogger(__name__)
+
+def run():
+    uvicorn.run("{{cookiecutter.module_name}}.app:app", host=config.app.host, port=config.app.port, proxy_headers=True)