Fixed function name call.

examples/osgsimulation/osgsimulation.cpp

@@ -331,7 +331,7 @@ int main(int argc, char **argv)
             
             // tell the overlay node to continously update its overlay texture
             // as we know we'll be tracking a moving target.
-            overlayNode->setContinousUpdate(true);
+            overlayNode->setContinuousUpdate(true);
         }