fix: update the quickstart

Signed-off-by: Pratik Mahalle <[email protected]>

Author: pratik-mahalle

versioned_docs/version-3.0.0/quickstart/python-flask-mongo.md

@@ -214,10 +214,10 @@ We'll be running our sample application right on Linux, but just to make things
 pip install -r requirements.txt
 ```
 
-## Start the MongoDB server
+## Start the MongoDB container
 
 ```bash
-sudo service mongod start
+docker compose up -d mongo
 ```
 
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