Update index.md to include additional video embed and formatting adjustments

Author: faheyr

docs/index.md

@@ -5,6 +5,10 @@
 
 This is a sample markdown file with some random content.
 
+<div align="center">
+	<iframe width="560" height="315" src="https://www.youtube.com/embed/CraBXLQ221Q" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
+</div>
+
 ### Features
 
 - Bullet points
@@ -19,6 +23,8 @@ This is a sample markdown file with some random content.
 ```python
 def hello_world():
 	print("Hello, world!")
+
+
 ```
 
 ##