Fix TODO in items_with_same_priority.md

[ahouseholder]

Fix the line

However, as discussed {== previously (see page 4) ==}, CVSS is designed to be accurate only within +/- 0.5,

to point to the appropriate location, (or revise text to make it unnecessary).

Figuring out the correct reference probably requires going back to the PDF.

[ahouseholder]

SSVC/docs/topics/items_with_same_priority.md

Line 13 in 5915548

However, as discussed {== previously (see page 4) ==}, CVSS is designed to be accurate only within +/- 0.5,

[ccullen-cert]

Made this #512 to address this issue.