[EUI+] Investigate why Docusaurus changes text size

[weronikaolejniczak]

The purpose of this task is to investigate why Docusaurus changes text size. This has been reported on: #8309 (comment)

The easiest solution would be defining the element in one line and not in multiple lines but we don't want to have to remember about this issue, it can easily sneak into all pages. Docusaurus shouldn't treat these lines as plain text and apply its paragraph styles. If the code is within a JSX block, it shouldn't be affected by global styles.

Screenshots