Fix querycolours action pack argument number

Fixes issue 3971

Change-Id: I17fb76bdb110b180473a59a88b3ea3f69263dc4c
Reviewed-on: http://gerrit.dmdirc.com/1082
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>
Reviewed-by: Gregory Holmes <greg@dmdirc.com>

src/com/dmdirc/actions/defaults/querycolours/action

 metadata:
   description=Changes the colour of query window names in the treeview (or other frame manager) when events occur.
   author=Shane <shane@dmdirc.com>
-  version=5
+  version=6
   component=11
 
 setting 0:

src/com/dmdirc/actions/defaults/querycolours/highlight

   group=windowcolours
 
 condition 0:
-  argument=1
+  argument=2
   component=STRING_STRING
   target=$highlightregex
   comparison=STRING_REGEX

src/com/dmdirc/actions/defaults/querycolours/highlightaction

   group=windowcolours
 
 condition 0:
-  argument=1
+  argument=2
   component=STRING_STRING
   target=$highlightregex
   comparison=STRING_REGEX