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/diglett.asm

@@ -1,10 +1,10 @@
-; DiglettPokedexEntry: ; 0x182b30
 	db "MOLE@" ; species name
 	dw 8, 20 ; height, weight
 
 	db   "It digs under-"
 	next "ground and chews"
 	next "on tree roots,"
+
 	page "sticking its head"
 	next "out only when the"
 	next "sun isn't bright.@"