Update "add-prefix-in-playerlist" & "add-prefix-in-playerlist" default descriptions to make less confusing

[axemwa]

Prefixes and suffixes not appearing in tablist even if enabled

Full output of /ess version:

[02:44:09 INFO]: Server version: 1.13.2-R0.1-SNAPSHOT git-Paper-645 (MC: 1.13.2)
[02:44:09 INFO]: EssentialsX version: 2.17.1.15
[02:44:09 INFO]: LuckPerms version: 4.4.1
[02:44:09 INFO]: PlaceholderAPI version: 2.10.3
[02:44:09 INFO]: Vault version: 1.7.2-b107
[02:44:09 INFO]: EssentialsXGeoIP version: 2.17.1.15

EssentialsX config: config.yml

Details

Steps to reproduce

Enable Add-prefix-in-playerlist
Enable Add-suffix-in-playerlist.
Start server
Check tablist in-game

Expected behavior
Prefixes and Suffixes from permissions manager to appear in tablist

Screenshots

[mdcfe]

add-prefix/suffix-in-playerlist are both dependent on add-prefix-suffix being set to true - if they're set to false, the playerlist options won't have any effect.

The implementation of the various prefix and suffix config options is confusing - ideally they should be streamlined and documented to make more sense, because right now it's hard for anyone to figure out what combination of options does what.

[axemwa]

I agree, maybe in next update changing the default descriptions for those could be changed to something more understandable like so

[JRoy]

Mostly addressed in #6108