7046007: (launcher) Improve usage information for -verbose option

Reviewed-by: darcy, alanb

src/share/classes/sun/launcher/resources/launcher.properties

@@ -43,7 +43,7 @@ java.launcher.opt.footer     =\    -cp <class search path of directories and zip
 \                  and ZIP archives to search for class files.\n\
 \    -D<name>=<value>\n\
 \                  set a system property\n\
-\    -verbose[:class|gc|jni]\n\
+\    -verbose:[class|gc|jni]\n\
 \                  enable verbose output\n\
 \    -version      print product version and exit\n\
 \    -version:<value>\n\