docs: fix typo in ws.py

[TudorAndrei-Pythia]

What is the motivation?

Documentation improvements

Type of Change

• [x] 📚 Examples / docs / tutorials / dependencies update
• [ ] 🔧 Bug fix (non-breaking change which fixes an issue)
• [ ] 🥂 Improvement (non-breaking change which improves an existing feature)
• [ ] 🚀 New feature (non-breaking change which adds functionality)
• [ ] 💥 Breaking change (fix or feature that would cause existing functionality to change)
• [ ] 🔐 Security fix

What does this change do?

Corrects the example URL.

Have you read the Contributing Guidelines?

• [x] I have read the Contributing Guidelines