Yet more simple fixes, mostly spelling.

This should be my last batch of these big fixes.

That's not to say there aren't still more things to fix.  There
certainly are.  But, I expect my future fixes will be smaller.

lib/world/wld/73.wld

@@ -113,7 +113,7 @@ The Secret Room~
    There is dust all over the place.  It looks like nobody has been here
 for ages.  In the middle of the room you see a socket with a crystal globe.
 The globe glows with a pulsing light.  To the north you see a stone door.
-To the south you see a grey block.
+To the south you see a gray block.
 ~
 73 8 0 0 0 1
 D0
@@ -122,9 +122,9 @@ You see a round stone door.
 door round stone~
 1 -1 7304
 D2
-You see a grey block.
+You see a gray block.
 ~
-block grey~
+block gray~
 1 -1 7306
 E
 crystal globe~
@@ -145,7 +145,7 @@ the presence of something IN the mud.  The only obvious exit is to the west.
 D0
 You can see nothing at all.
 ~
-block grey~
+block gray~
 1 -1 7305
 D3
 ~
@@ -712,7 +712,7 @@ S
 #7333
 The End Of Long Tunnel~
    You are at a end of a long tunnel.  Right in front of you, you can see a
-grey mass.  To the east you can see a tremendously long tunnel, but you know
+gray mass.  To the east you can see a tremendously long tunnel, but you know
 that, you were just there.
 ~
 73 9 0 0 0 5
@@ -722,12 +722,12 @@ A long tunnel.  JUST like in the description!
 ~
 0 -1 7331
 D3
-A grey mass is blocking the way.
+A gray mass is blocking the way.
 ~
-mass grey~
+mass gray~
 1 -1 7334
 E
-grey mass~
+gray mass~
    The mass is nothing but a mass, but it is quite suspicious!
 ~
 S