wish bit

<Someone> wrote:
>> You're equally unlikely to be wishing for spellbooks by colour,
>> but I note that 'grey' for 'gray' only works for dragonscale and
>> stones, not the spellbook description.
>>
> I've just noticed that the fix for this only works for 'grey
> spellbook', not 'grey spell book'; 'spell book' works for wishing
> in other contexts, so it probably ought to here :-)

src/objnam.c

@@ -2019,7 +2019,7 @@ boolean from_user;
 		as++;
 	}
 	/* can't use spellings list for this one due to shuffling */
-	if (!strcmpi(bp, "grey spellbook"))
+	if (!strncmpi(bp, "grey spell", 10))
 		*(bp + 2) = 'a';
     }