📚 Update README with correct usage and example workflow

🔧 This commit enhances the README documentation for the Auto PR Action:

- 🔄 Updates the action usage example with the correct GitHub username (`yuri-val`)
- ➕ Adds a comprehensive example workflow section
- 🚀 Provides a ready-to-use `.github/workflows/auto-pr.yml` configuration
- 🔑 Clarifies the use of `PAT_TOKEN` for authentication
- 📝 Improves overall documentation structure and readability

These changes will help users quickly understand how to implement and configure the Auto PR Action in their projects, reducing potential setup issues and improving adoption.

README.md

@@ -31,7 +31,7 @@ To use this action in your workflow, add the following step:
 
 ```yaml
 - name: Auto PR from Dev to Default
-  uses: your-github-username/auto-pr-action@v1
+  uses: yuri-val/auto-pr-action@v1
   with:
     openai_api_key: ${{ secrets.OPENAI_API_KEY }}
     github_token: ${{ secrets.GITHUB_TOKEN }}
@@ -40,6 +40,31 @@ To use this action in your workflow, add the following step:
 
 Make sure to set up the `OPENAI_API_KEY` secret in your repository settings.
 
+### Example Workflow Using Your Custom Action
+
+Create a workflow file in your repository (e.g., `.github/workflows/auto-pr.yml`):
+
+```yml
+name: Auto PR from dev to default
+
+on:
+  push:
+    branches:
+      - dev
+
+jobs:
+  auto-pr:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Run Auto PR Action
+        uses: yuri-val/[email protected]
+        with:
+          openai_api_key: ${{ secrets.OPENAI_API_KEY }}
+          github_token: ${{ secrets.PAT_TOKEN }}
+          dev_branch: 'dev'  # Optional, defaults to 'dev'
+
+```
+
 ## How it works
 
 1. Checks out the repository