Remove experimental_ prefix from example app (#215)

Fixes #214

examples/pages/dynamic_updates.py

@@ -105,7 +105,7 @@ def main():
  st.session_state["last_object_clicked"] = out["last_object_clicked"]
  state = get_state_from_lat_lon(*out["last_object_clicked"].values())
  st.session_state["selected_state"] = state
- st.experimental_rerun()
+ st.rerun()
 
  st.write("## Dynamic feature group updates")