Replace string.gsub w/ gsub.

diff --git a/ARLDatamine.lua b/ARLDatamine.lua
index 9782f34..3860a8f 100644
--- a/ARLDatamine.lua
+++ b/ARLDatamine.lua
@@ -818,7 +818,7 @@ function addon:GenerateLinks()
 	-- This code adopted from Gnomish Yellow Pages with permission

 	local guid = UnitGUID("player")
-	local playerGUID = string.gsub(guid,"0x0+","")
+	local playerGUID = gsub(guid,"0x0+","")

 	-- Listing of all tradeskill professions
 	local tradelist = {51304,51300,51313,51306,45363,51311,51302,51309,51296,45542}