docs: fix intents-related docs

[Bilal2453]

1. setIntents parameter type changed to number since it is never resolved in a meaningful way.
2. setIntents paramter changed to optional, as it will default to 0.
3. changed Intents-Resolvables to Intents-Resolvable because that is what Discordia uses everywhere.

[SinisterRectus]

I already said I didn't want to change this. 1 and 3 are intentional. 2 is fine.

[Bilal2453]

Sorry, seems like it was a miscommunication! I thought you wanted this.

Then nothing needs to be changed here, but there is a bit of a consistency problem to describe:

Currently in the Input resolution wiki page we list all resolvers, the way those Input resolution entries are named is by removing the -Resolvable suffix, leaving the resolver name, so for example Permission-Resolvable becomes Permission, Permissions-Resolvable becomes Permissions etc. If we use the same pattern here, we end up with two entries with the same name, Intents and Intents, because the difference is in the suffix which we currently remove. Intents-Resolvable vs Intents-Resolvables.

If we use the same pattern we use right now, you will end up with two entries having the same name like this:

Edit: Just noticed that we have other types not currently in the wiki with a similar problem:

• Message-ID-Resolvables
• Role-ID-Resolvables
• Permissions-Resolvables (we have Permissions-Resolvable documented although)

Should probably rework the input resolution wiki page instead