Dune Swiftrider: add description

data/core/units/dunefolk/Swiftrider.cfg

@@ -13,7 +13,7 @@
     advances_to=Dune Windrider
     cost=36
     usage=archer
-    description= _ "Riders who demonstrate exceptional skill with the bow are made into Swiftriders, spending hours every day practicing and building a rapport with their steed. This has made them the fastest riders in the Dunefolk armies, and a wise Warmaster uses this to their advantage."
+    description= _ "Swiftriders are those who favor archery over melee weaponry. Fleet and elusive, these horsemen are experts at harassing less mobile foes with hails of arrows. As excellent skirmishers in the desert, Swiftriders are most often used as combat scouts or to hunt down fleeing enemies. Though not usually trained for infiltration or spying, these equestrians’ ability to pass messages from afar with their long-ranged arrows is of great use to maintain communication among the Dunefolk armies."
     die_sound=horse-die.ogg
     {DEFENSE_ANIM "units/dunefolk/swiftrider.png" "units/dunefolk/swiftrider.png" {SOUND_LIST:HORSE_HIT} }