Corrected the comment to match PEP8

[nikzor]

In ast.py file in repository we get warning from linter: "PEP 8: E501 line too long (129 > 120 characters)" in line 32

cam/metrics/ast.py

Line 32 in 428b12f

"""Ratio between the number of attributes that are data primitives and the number of attributes that are pointers to objects.

I suggest to fix it

[yegor256]

@nikzor read this please: https://www.yegor256.com/2024/04/01/ping-me-please.html