Fix heading level
@@ -50,7 +50,7 @@ If, however, your goal is not to use Aqua has a tool, but rather to contribute n
cloning this repository. This will give you a more direct access to the code. In any case, we recommend using Python virtual
environments to improve your experience.
-### Running an Algorithm
+## Running an Algorithm
Now that you have installed Aqua, you can execute an algorithm. This can be done [programmatically](#programming) or using a
[JSON](http://json.org/) file as an input. Whether via dictionary or via JSON, the input is validated for correctness against
