Update audio_ffmpeg.cs

Fixed the example precondition attribute

AudioApplication is a required argument

Thanks @MinnDevelopment for his awesome work on
the JDA guide that had no influence here at all.

🥄 better docs soon come

Conflicts:
	docs/guides/samples/dependency_module.cs
	src/Discord.Net.Commands/Utilities/ReflectionUtils.cs

Conflicts:
	docs/guides/samples/logging.cs
Update logging.cs

Update home page on docs

Update doc samples

SetStatus and SetGame don't exist, only SetStatusAsync and SetGameAsync

Intended to make the Home more than a placeholder, and more homey

Typically, you will want to mark his method as `async`, although it is 
not required. 

Changed `his` to `this`

CheckPermissions was not set to async so await would not work.

await commands.LoadAssembly(Assembly.GetCurrentAssembly(), map);
->
await commands.AddModulesAsync(Assembly.GetEntryAssembly());

if (!result.IsSuccess)
    await msg.Channel.SendMessageAsync(result.ErrorReason);
}
msg -> context

this one took a while

Resolves #280

As changed in 23a0316252

some users were having trouble with this

Resolves #223