THoT S03: fix speaker= typo

Author: Dalas121

data/campaigns/The_Hammer_of_Thursagan/scenarios/03_Strange_Allies.cfg

@@ -151,7 +151,7 @@
             message= _ "In the name of the Alliance, quit these lands now!"
         [/message]
         [message]
-            speaker=Gothras
+            speaker=Gorthas
             message= _ "We will fare where we will and take what we will, dog of an orc. To the dark gods with you and your precious ‘Alliance’. Even your own kind are fed up with your peacemaking!"
         [/message]
         [message]