Probably mistake in rating calculation for Google spreadsheet v2.0.6

[amedvedchuk]

Hi there!
It seems to be a mistake in google spreadsheet version for SAMM assessment v2.0.6 on the Interview tab.
Link to file: https://docs.google.com/spreadsheets/d/1jmLVltRhuG19AX5cLUcWH1Qox2Uic17rD29gMVG5zDE/view#gid=1649885013

There are three places where calculation differs from others and from those in Microsoft excel version v2.0.8 (https://github.com/owaspsamm/core/releases/download/v2.0.8/SAMM_spreadsheet.xlsx)

Actual calculations:
https://docs.google.com/spreadsheets/d/1jmLVltRhuG19AX5cLUcWH1Qox2Uic17rD29gMVG5zDE/view#gid=1649885013&range=H25:H30
https://docs.google.com/spreadsheets/d/1jmLVltRhuG19AX5cLUcWH1Qox2Uic17rD29gMVG5zDE/view#gid=1649885013&range=H39:H44
https://docs.google.com/spreadsheets/d/1jmLVltRhuG19AX5cLUcWH1Qox2Uic17rD29gMVG5zDE/view#gid=1649885013&range=H53:H58

As I understand these sells need to be empty otherwise answers from one security practice
For example "Policy & Compliance" affects "Strategy & Metrics" and so on.