add ctrl freq to tiago python example

Author: dtotsila

src/examples/python/tiago.py

@@ -9,7 +9,7 @@
 
 freq = int(1//dt)
 # @TIAGO_PYTHON@
-robot = rd.Tiago()
+robot = rd.Tiago(freq)
 # @TIAGO_PYTHON_END@
 print("the model used is [", robot.model_filename(), "]")