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/charizard.asm

@@ -1,10 +1,10 @@
-; CharizardPokedexEntry: ; 0x1818b3
 	db "FLAME@" ; species name
 	dw 507, 2000 ; height, weight
 
 	db   "It uses its wings"
 	next "to fly high. The"
 	next "temperature of its"
+
 	page "fire increases as"
 	next "it gains exper-"
 	next "ience in battle.@"