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/magcargo.asm

@@ -1,10 +1,10 @@
-; MagcargoPokedexEntry: ; 0x1d0b21
 	db "LAVA@" ; species name
 	dw 207, 1210 ; height, weight
 
 	db   "Its body is as hot"
 	next "as lava and is"
 	next "always billowing."
+
 	page "Flames will"
 	next "occasionally burst"
 	next "from its shell.@"