typo in intro 3

[tsatse]

in the exercise about finding the bisect unit vector of to given vectors, I see a typo in the lesson text :
vec2 r = p.bgr; //r = vec3(3, 2, 1)
instead of
vec3 r = p.bgr; //r = vec3(3, 2, 1)

I tried to fix it but the readme file seems to be already correct, which puzzles me