Update the image now public.

Author: mikeckennedy

README.md

@@ -1,5 +1,5 @@
 # Async Techniques and Examples in Python Course
 
-![](https://raw.githubusercontent.com/talkpython/async-techniques-python-course/master/readme_resources/async-python.png?token=AB8Pad-4aP4ZG6hPGNmoR5DROzcXes1Tks5bhZK0wA%3D%3D)
+![](https://raw.githubusercontent.com/talkpython/async-techniques-python-course/master/readme_resources/async-python.png)
 
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