Please change font to monospace for yaml documentation snippets so indentation is more clear

Hello, I think it would help save people time & avoid issues if we could use a monspace font for all yaml documentation snippets.

For example on this page: https://serverless.com/framework/docs/providers/aws/events/cloudwatch-log/

I was getting successful deployments of a lambda but the events were not being added - because I structured my yaml indentation after what it looked like in the above link. I eventually copy pasted the yaml from the above link into a text editor with monospace font - then it was immediately apparent what I needed to do to fix the issue.

Thanks!