Update api_change.rst formatting

docs/source/api_change.rst

@@ -20,6 +20,7 @@ Thus, be sure to implement each in order so that subsequent line numbers are cor
 *  The floating feedback gain can be scheduled on the low pass filtered wind speed signal.  Note that Fl_Kp can now be an array.
 
 **Rotor position tracking**
+
 *  Control the azimuth position of the rotor with `OL_Mode` of 2 using a PID torque controller with gains defined by `RP_Gains`.
 *  Control all three blade pitch inputs in open loop