Tweak -help text.

git-svn-id: https://www.prismmodelchecker.org/svn/prism/prism/trunk@4700 bbc10eb1-c90d-0410-af57-cb519fbb1720

prism/src/prism/PrismCL.java

@@ -1633,7 +1633,7 @@ public class PrismCL implements PrismModelListener
 		mainLog.println("-property <n> (or -prop <n>) ... Only model check property <n>");
 		mainLog.println("-const <vals> .................. Define constant values as <vals> (e.g. for experiments)");
 		mainLog.println("-steadystate (or -ss) .......... Compute steady-state probabilities (D/CTMCs only)");
-		mainLog.println("-transient <x> (or -tr <x>) .... Compute transient probabilities for time <x> (D/CTMCs only)");
+		mainLog.println("-transient <x> (or -tr <x>) .... Compute transient probabilities for time (or time range) <x> (D/CTMCs only)");
 		mainLog.println("-simpath <options> <file>....... Generate a random path with the simulator");
 		mainLog.println("-nobuild ....................... Skip model construction (just do parse/export)");
 		mainLog.println("-test .......................... Enable \"test\" mode");