Recolors and fixes holodeck chess board, fixes error on white king's description (#73886)

## About The Pull Request

In a chess board, the white pieces occupy the 1-2 squares, while the
black pieces occupy the 7-8 squares. This was reversed in space chess,
with the white pieces being on black's position and vice versa.
I changed the colors of the board as well, to make it nicer to the eye
(and also occupying full tiles since the old version used the regular 4
square tiles). This accompanied by switching the carpet to wood for a
more aesthetically pleasing view (esp since carpets look ugly in that
shape).
I made the names of the chess pieces lowercase to make it consistent
("That's a Black Pawn." -> "That's a black pawn.") and fixed the white
king's description.
All in all, the chess board looks like this now.


![imagen](https://user-images.githubusercontent.com/68669754/224214951-d10e9a8b-1a8e-492c-bd91-0fd5ecae4385.png)

## Why It's Good For The Game

![imagen](https://user-images.githubusercontent.com/68669754/224215899-2059f845-0071-4a21-84bb-13108ceec9b2.png)

![imagen](https://user-images.githubusercontent.com/68669754/224215206-1b5ef367-a5c5-436c-9bf5-665f243fe3e8.png)

![imagen](https://user-images.githubusercontent.com/68669754/224215215-0b5799b3-9f47-46f2-958a-6dd211eff59a.png)

![imagen](https://user-images.githubusercontent.com/68669754/224215235-4c5381de-93ce-4760-b881-50412a6e55b9.png)

## Changelog

🆑
qol: Holodeck space chess board is more pleasing to look at.
fix: Fixes holodeck space chess pieces being reversed.
spellcheck: Fixed white king's description saying it moves any tile in
one direction.
/🆑

code/modules/holodeck/turfs.dm

@@ -196,3 +196,11 @@
 
 /turf/open/floor/holofloor/stairs/right
 	icon_state = "stairs-r"
+
+/turf/open/floor/holofloor/chess_white
+	icon_state = "white_large"
+	color = "#eeeed2"
+
+/turf/open/floor/holofloor/chess_black
+	icon_state = "white_large"
+	color = "#93b570"