Command cleanup (#2351)
* update version command tagline
replace links with variables for readability
* move guide link into a constant
* formatting and wording fixes
* formatting fixes in NPCCommandHandler
* formatting mostly in fishing command
I have no idea what the flag "percent" does so I just made something up, should probably be changed.
* more npc formatting fixes
also shorten an if statement
* acikek suggestions
fix passive voice
use screaming snake case
* fix my own typo (oops)
* review fixes
* more review changes
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commit: a2cd344)
