Brief description not added and description added twice

[rmgaray]

I've tried adding a description to a file as explained here but the generator fails to include the brief description and also duplicates the description itself.

This is what I added at the beginning of single_address_wallet.gd:

extends RefCounted
## A brief description of the class.
##
## A longer description of what the class does and how to initialize it.

class_name SingleAddressWallet

But the generator creates this:

I noticed this because we need to revise our docs to properly follow the GDScript doc comment system (all of our descriptions are broken I believe).

Originally posted by @rmgaray in https://github.com/mlabs-haskell/godot-cardano/pull/62#pullrequestreview-2134417087

[rmgaray]

Other issue I noticed:

• I think most style tags in BBCode (like [b][/b]) are not processed by our documentation system.