rule-processor-overview.md sequence diagram numbering

[Sandy Labuschagne]

https://github.com/frmscoe/docs/blob/main/Product/rule-processor-overview.md

Inconsistent numbering in the sequence diagram and the paragraphs below (from 3.3 onwards)

3.3 Check for early exit conditions (diagram)

3.3.1 Check for early exit conditions (paragraph)

Decide whether to change the sequence diagram numbering or the paragraph numbering from 3.3 onwards