CoarseOrientation.uavcan: ANGLE_MULTIPLIER constant mismatches NORM comment

[huangfuluya]

In https://github.com/dronecan/DSDL/blob/master/uavcan/CoarseOrientation.uavcan， the comment states:

 Where NORM is 12, because it:
  - Fits the maximum range of a signed 5 bit integer
  - Allows to exactly represent the following angles:
    0, 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165, 180, and negatives

However the constant value is:
float32 ANGLE_MULTIPLIER = 4.7746482927568605
which equals 15 / pi, not 12 / pi (12 / pi ≈ 3.8197).
So the comment and constant are inconsistent. It looks like the intended NORM is 15, which is the max positive value of signed 5‑bit and maps π rad to 15 with 15‑degree increments.