STYLE: corrected typo

tutorials/incompressible/pisoFoam/les/motorBike/Allrun

@@ -25,7 +25,7 @@ cloneParallelCase()
 # Do the Spalart-Allmaras steady-state case
 (cd motorBike && foamRunTutorials)
 
-# Clone the steady-stae case to the LES case
+# Clone the steady-state case to the LES case
 cloneParallelCase motorBike motorBikeLES
 
 # Do the LES case