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/spinarak.asm

@@ -1,10 +1,10 @@
-; SpinarakPokedexEntry: ; 0x1cd012
 	db "STRINGSPIT@" ; species name
 	dw 108, 190 ; height, weight
 
 	db   "If prey becomes"
 	next "ensnared in its"
 	next "nest of spun"
+
 	page "string, it waits"
 	next "motionlessly until"
 	next "it becomes dark.@"