reword earth 4 area

spells/Earth4.tex

@@ -4,7 +4,7 @@
   {Earth}% Spheres
   {weather conditions}% Resist with
   {The caster cries to every snowflake in a snowstorm, to settle and bind into ice.
-    Brick by brick, they form a castle of ice, \arabic{spellTargets} wide and long}% Description
+    Brick by brick, they form a castle of ice, with an area of \arabic{spellTargets} square \glspl{step}}% Description
   {
     The castle only has shape, no doors, shutters, or anything more than halls and rooms.
     However, those halls always come covered in symbols, writing, or other elements from the caster's subconscious.