Correct typing for TextWriter2d

[nocarryr]

The pos argument for Textwriter2d's draw method is annotated as a 3-tuple:

moderngl-window/moderngl_window/text/bitmapped/text_2d.py

Line 71 in 81da3db

def draw(self, pos: tuple[float, float, float], length: int = -1, size: float = 24.0) -> None:

It should be a 2-tuple according to its shader:

moderngl-window/moderngl_window/text/bitmapped/bitmapped/programs/text_2d.glsl

Line 25 in 81da3db

uniform vec2 text_pos;

[einarf]

Thanks. that this was created in a hurry just to get some text going.