Doc improvement - Examples using <some-method> section quirk fix

[1himan]

Reference issue (if any)

as discussed in https://mne.discourse.group/t/question-related-to-docs/11653/

What does this implement/fix?

Additional information

The new change in css file looks something like this:

and if we just remove the backticks, it'll look something like this:

If we want things to be simple, we can go for the latter option but IMHO the first looks good too.