fix: missing docker compose up command in quick start

[mervivian]

Summary

The Docker Compose quick start in README.md was missing the actual docker compose up command. After cloning the repo, cd-ing into the docker folder, and touching .env.local, the code block ended with a stray # comment and a blank line — leaving users with no command to actually start Jitsu.

How to reproduce

1. Open README.md and find the "Docker Compose" section under "Install Jitsu"
2. Follow the commands in the bash block — the last line is # with nothing after it
3. No command is given to start the services

Test plan

• Confirm the code block now ends with docker compose up --force-recreate
• Matches the command documented in docker/README.md