Typo in python lesson 08. BMI

[MilanGrujicic]

Hello team,

I would like to report a typo in this page.

There is a mismatch between the plurality of the verb and the subject of the following sentence:

'The parentheses is optional here, because of the order of operations.'

The string 'is' should be replace with 'are'.

Please see attached picture for more context. 👇

[sonnynomnom]

Updated: https://github.com/codedex-io/curriculum/commit/ed1c86ee37c2fe2dd2a51b3263463e714182028d

+2!