Clean up comments

Base data: types uniquely lacked a comment; items on one line; distinguish unknowns
Dex entries: don't imply that pointers don't exist

data/pokemon/dex_entries/slowbro.asm

@@ -1,10 +1,10 @@
-; SlowbroPokedexEntry: ; 0x1b8635
 	db "HERMITCRAB@" ; species name
 	dw 503, 1730 ; height, weight
 
 	db   "An attached"
 	next "SHELLDER won't let"
 	next "go because of the"
+
 	page "tasty flavor that"
 	next "oozes out of its"
 	next "tail.@"