Add Assistants API course to Video courses section (openai#868)

articles/related_resources.md

@@ -40,6 +40,8 @@ People are writing great tools and papers for improving outputs from GPT. Here a
 - [Andrew Ng's DeepLearning.AI](https://www.deeplearning.ai/short-courses/chatgpt-prompt-engineering-for-developers/): A short course on prompt engineering for developers.
 - [Andrej Karpathy's Let's build GPT](https://www.youtube.com/watch?v=kCc8FmEb1nY): A detailed dive into the machine learning underlying GPT.
 - [Prompt Engineering by DAIR.AI](https://www.youtube.com/watch?v=dOxUroR57xs): A one-hour video on various prompt engineering techniques.
+- [Scrimba course about Assistants API](https://scrimba.com/learn/openaiassistants): A 30-minute interactive course about the Assistants API.
+
 
 ## Papers on advanced prompting to improve reasoning