Fix style of example-block #24077

What do you see as an issue?

Style of example-block in the document is broken.

This problem occurs when browser width is between 1000px and 1280px.

See: https://airflow.apache.org/docs/apache-airflow-providers-http/stable/operators.html

Solving the problem

The container class should be removed.

<div class="example-block-wrapper docutils container">
                                           ^^^^^^^^^
  ...
</div>

Anything else

No response

Are you willing to submit PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct