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/aipom.asm

@@ -1,10 +1,10 @@
-; AipomPokedexEntry: ; 0x1cda11
 	db "LONG TAIL@" ; species name
 	dw 207, 250 ; height, weight
 
 	db   "It uses its tail"
 	next "to hang on to tree"
 	next "branches. It uses"
+
 	page "its momentum to"
 	next "swing from one"
 	next "branch to another.@"