Code of Conduct location in Github Issue templates

[ccoenen]

💌 Description

The location of the code of conduct apparently changed. I am not sure if it is supposed to live in the .github subdirectory, but I offer this PR to bring the issue templates in line with the actual location.

🏗️ Type of change

• 📚 Examples / docs / tutorials
• 🐛 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
• ⬆️ Dependencies update

(Neither does apply.)

✅ Checklist

• I've read the Code of Conduct document.
• I've read the Contributing guide.
• I've written tests for all new methods and classes that I created.
• I've written the docstring in Google format for all the methods and classes that I used.

(the latter two do not apply in this case)

[DariuszPorowski]

@ccoenen good catch, thank you!