Update segments.md

[bojana-z]

Added sentence for segment value encoding

Description:

Please include a description of this change and which issue it fixes. If no issue exists yet please include context and what problem it solves.

Review

• Functional review done
• Potential edge cases thought about (behavior of the code with strange input, with strange internal state or possible interactions with other Matomo subsystems)
• Usability review done (is anything maybe unclear or think about anything that would cause people to reach out to support)
• Security review done
• Wording review done
• Code review done
• Tests were added if useful/possible
• Reviewed for breaking changes
• Developer changelog updated if needed
• Documentation added if needed
• Existing documentation updated if needed

[sgiehl]

@bojana-z what is the reason for adding that? That page actually starts with This guide applies to core developers., so it should be clear this is not meant for normal users. Or were there any confusions?

[bojana-z]

@sgiehl there was some confusion with a customer. Matthieu suggested adding it to prevent similar support requests in the future.

[sgiehl]

Ah ok. Well I'm not sure if it might not make more sense to have a general message being displayed on all pages that they are viewing the developer docs, which are not meant to be used by normal users. Otherwise we might end up adding such a note to all pages over time...

[bojana-z]

I think that's a good idea.