fix(custom_auth_guards): fix some small mistakes

[MaximeMRF]

Hello, small pr just to correct some little mistakes:

• Use E_UNAUTHORIZED_ACCESS instead of the old way to define error
• Use the name options instead of config because you begin by using the config object but suddenly in the code you use options instead config at line 227 jwt.sign({ userId: providerUser.getId() }, this.#options.secret)

[thetutlage]

Thanks 👍