Fix code block in usage example

tekktrik · tekktrik · commit 6123df1ad7c9 · 2022-02-15T12:44:39.000-05:00
diff --git a/README.rst b/README.rst
@@ -59,7 +59,7 @@ To install in a virtual environment in your current project:
 Usage Example
 =============
 
-.. code-block: python3
+.. code-block:: python3
 
     import board
     import busio
