3984 labels descriptions

[mbgower]

Closes #3984 by incorporating the idea of accuracy into 2.4.6 Headings and Labels, and reinforcing the relationship between 2.4.6 and 3.3.2 Labels or Instructions

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[TestPartners]

A semi-colon would be a more appropriate separator than a dash or hyphen.

[StackOverflowIsBetterThanAnyAI]

I see no improvement changing xxx - xxx to xxx-xxx.

[patrickhlauke]

I see no improvement changing xxx - xxx to xxx-xxx.

for context, the change here uses an actual – dash character rather than a - minus sign. and in traditional typography, there's no spaces around dashes (or rather, generally you'd want a hairline space)

[patrickhlauke]

x-ref #4096

[patrickhlauke]

discussed in backlog meeting - opted to reintroduce the spaces around the – dashes (even though it does break the "proper" typographic rules, but improves readability)