Code blocks should be monospaced

[karenzone]

Code samples are appearing in regular type, but should be monospaced.

[sylvie777]

@karenzone This has been updated. Are you still experiencing the issue? Here's a sample page:

https://www.elastic.co/guide/en/logstash/7.2/plugins-inputs-azure_event_hubs.html

cc @brianjolly

[karenzone]

@sylvie777 I spot-checked several examples, and this issue appears to be resolved. Thank you!