Array Mesh: Godot renders in a clockwise direction (relative to what?)

## Docs Version:

Both Stable and Latest

## Issue description:

[Array Mesh - generating a rectangle](https://docs.godotengine.org/en/latest/tutorials/3d/procedural_geometry/arraymesh.html#generating-a-rectangle)

https://github.com/godotengine/godot-docs/blob/0863d63e89ff913807bae6524b7ab4dc489fddbf/tutorials/3d/procedural_geometry/arraymesh.rst?plain=1#L314-L316

Godot renders the vertices clockwise... Relative to what? A specific axes, the camera, the mesh normals?

I was trying to do this with what _I thought was clockwise_ and the rendered polygon faced _away_ from the camera. Have I got my vertices' positions mixed up, or did I misunderstand "clockwise"? 🤷

By clarifying what is meant by "clockwise" here, it eliminates one possibility of where I, and others, may go wrong.

## Solution

Either:
- a link or a (see X) to something else that describes this rendering
- explain it inline