DOC: add reference for reshaping thrust curve in documentation and improve method docstring

Author: Gui-FernandesBR

docs/user/motors/thrust.rst

@@ -164,6 +164,8 @@ class also supports them. Let's see how to use it.
     )
     solid_lambda.info()
 
+.. _reshaping_thrust_curve:
+
 Reshaping and interpolating the thrust curve
 --------------------------------------------
 

rocketpy/motors/motor.py

@@ -878,7 +878,8 @@ def propellant_I_23(self):
     def reshape_thrust_curve(thrust, new_burn_time, total_impulse):
         """Transforms the thrust curve supplied by changing its total
         burn time and/or its total impulse, without altering the
-        general shape of the curve.
+        general shape of the curve. This method does not mutate the original
+        object, it only returns a new thrust curve
 
         Parameters
         ----------
@@ -893,6 +894,11 @@ def reshape_thrust_curve(thrust, new_burn_time, total_impulse):
         -------
         Function
             Reshaped thrust curve.
+
+        See Also
+        --------
+        See :ref:`_reshaping_thrust_curve` for examples on how to use this
+        reshaping method.
         """
         # Retrieve current thrust curve data points
         time_array, thrust_array = thrust.x_array, thrust.y_array