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/machamp.asm

@@ -1,10 +1,10 @@
-; MachampPokedexEntry: ; 0x1b8133
 	db "SUPERPOWER@" ; species name
 	dw 503, 2870 ; height, weight
 
 	db   "With four arms"
 	next "that react more"
 	next "quickly than it"
+
 	page "can think, it can"
 	next "execute many"
 	next "punches at once.@"