Updated PlaceholderAPI (markdown)

PlaceholderAPI.md

@@ -13,6 +13,7 @@ Placeholder                                           | Description |
 ```%griefdefender_claim_owner%```    |    Returns the claim owner name.
 ```%griefdefender_claim_trust%```    |    Returns whether you are trusted in the claim you are standing in.
 ```%griefdefender_claim_type%```    |    Returns the claim type of claim you are standing in.
+```%griefdefender_claim_area%```  | Returns the claim size of claim you are standing in.
 ```%griefdefender_claim_for_sale%```    |    Returns whether claim is for sale.
 ```%griefdefender_player_blocks_accrued_max%```    |    Returns the max amount of blocks you are able to accrue.
 ```%griefdefender_player_blocks_accrued_rate%```    |    Returns the total amount of blocks you are accruing per hour.