Fix Authorization URL Update discord.ts

[cjpitch23]

🔗 Linked issue

❓ Type of change

• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality like performance)
• ✨ New feature (a non-breaking change that adds functionality)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

I have fixed the url used for Discord oath2 authorization. It required the removal of the /api part in the route in accordance with Discords OAuth2 documentation (read here: https://discord.com/developers/docs/topics/oauth2).

Furthermore, I added a parameter to the request called "integration_type" and I set the value to 1. Though the Discord documentation states that it is unnecessary unless a specific scope is being called, I kept receiving an error that said "Installation type not supported for this application". I solved it by adding the integration type and setting it to user install.

📝 Checklist

I have not linked an issue or discussion, as I did not see one. I also do not believe this change will require any change to the documentation.

• I have linked an issue or discussion.
• I have updated the documentation accordingly.

[RomainLanz]

Thanks!