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/tangela.asm

@@ -1,10 +1,10 @@
-; TangelaPokedexEntry: ; 0x1b948c
 	db "VINE@" ; species name
 	dw 303, 770 ; height, weight
 
 	db   "During battle, it"
 	next "constantly moves"
 	next "the vines that"
+
 	page "cover its body in"
 	next "order to annoy its"
 	next "opponent.@"