Stricter RegExps

[avivkeller]

Currently, our RegExps are a bit loose to allow for slight inaccuracies in the core documentation, however, this leads to things being matches that should not be matched.

For example, as shown below, CMake.js treated as a property (https://nodejs-api-docs-tooling.vercel.app/n-api.html#cmakejs):

This is because our RegExp (currently /^(?:Class property: +)?`?[A-Z]\w+(?:\.[A-Z]\w+)*(?:(\[\w+\.\w+\])|\.(\w+))`?$/i) does not require the "Class property:" designation, nor the `backticks` wrapping. We should fix any/all inaccuracies in core, and make these RegExps stricter.