Trim all the extra whitespace from the edges of the image and set an explicit width

Author: nathan-contino

documentation/asciidoc/microcontrollers/micropython/images/micropython_book.png

@@ -9,7 +9,7 @@ https://docs.micropython.org/en/latest/library/rp2.html[RP2 Library]:: The offic
 
 === Further reading
 
-image::images/micropython_book.png[role="w40",float=right]
+image::images/micropython_book.png[width="70%",float=right]
 
 Check out https://store.rpipress.cc/collections/getting-started/products/get-started-with-micropython-on-raspberry-pi-pico-2nd-edition[_Get Started with MicroPython on Raspberry Pi Pico_] to learn how to use the beginner-friendly language MicroPython to make your Raspberry Pi Pico interact with the world around it. Using these skills, you can create your own electro-mechanical projects, whether for fun or to make your life easier.