"create_planet" devient "create_celestial_object"

practical_work/planets/skeleton/planet/planet.h

@@ -20,7 +20,7 @@ typedef struct _system
 
 // Those function are not mandatory to implement,
 // it's rather a hint of what you should have.
-celestial_body_t create_planet(double mass, vec2 pos);
+celestial_body_t create_celestial_body(double mass, vec2 pos);
 system_t create_system(double delta_t);
 void show_system(struct gfx_context_t *ctxt, system_t *system);
 void update_system(system_t *system, double delta_t);