Fix: Fixed example in readme

Author: JohnGrigoriadis

README.md

@@ -24,7 +24,7 @@ To run the code examples please do
 ```bash
 uv venv
 uv sync
-uv run examples/0_render_single_frame.py
+uv run examples/z_ec_course/0_render_single_frame.py
 ```
 
 <!-- ## TODO: Installation