Fix the typo in Q&A.md

[Lucas-Wong-Dev]

The letter D in Django should be uppercase.

Because Django was developed in a fast-paced newsroom environment, it was designed to make common web development tasks fast and easy. Here’s an informal overview of how to write a database-driven web app with Django.

https://docs.djangoproject.com/en/4.0/intro/overview/

[timqian]

Thanks @vpakati