Update format.yml

[UltralyticsAssistant]

This pull request adds an improved Ultralytics Actions workflow to automatically format code and documentation to the new Ultralytics official standards maintained at https://github.com/ultralytics/actions.

Four individual actions are run by default. To disable actions, set them to false, i.e. 'python: false'.

To customize an action use a pyproject.toml file in this repo, and see the individual action repo for details.

name: Ultralytics Actions

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]

jobs:
  format:
    runs-on: ubuntu-latest
    steps:
      - name: Run Ultralytics Formatting
        uses: ultralytics/actions@main
        with:
          python: true
          docstrings: true
          markdown: true
          spelling: true

🛠️ PR Summary

_{Made with ❤️ by Ultralytics Actions}

🌟 Summary

Enhancements to automatic code and documentation formatting in Ultralytics' GitHub workflows.

📊 Key Changes

• Updated workflow comments to reference Ultralytics Actions.
• Workflow now explicitly defines the formatting options: Python code, docstrings, markdown files, and spelling checks.
• Reduced the space used in the README by placing two images on the same line.

🎯 Purpose & Impact

• 🎨 Encourages consistent code and documentation style across Ultralytics' PRs.
• 🐍 Ensures Python codes, docstrings, markdown, and spelling are all automatically checked, reducing the chance of manual formatting errors.
• 📚 Improves the README layout, making it more compact and visually appealing.