#820 Lua: put same time data as in freefem's script.

Data/Lua/demo_input_poromechanics.lua

@@ -16,12 +16,12 @@ transient = {
 	-- Time step between two iterations, in seconds.
 	-- Expected format: VALUE
 	-- Constraint: v > 0.
-	timeStep = 0.1,
+	timeStep = 1.e-3,
 
 	-- Maximum time, if set to zero run a static case.
 	-- Expected format: VALUE
 	-- Constraint: v >= 0.
-	timeMax = 0.4
+	timeMax = 2.e-3
 
 } -- transient