fix(examples) correct comment in slider example (#3419)

The label is above the slider in this example, not below it.

examples/get_started/lv_example_get_started_3.c

@@ -23,7 +23,7 @@ void lv_example_get_started_3(void)
     lv_obj_center(slider);                                  /*Align to the center of the parent (screen)*/
     lv_obj_add_event_cb(slider, slider_event_cb, LV_EVENT_VALUE_CHANGED, NULL);     /*Assign an event function*/
 
-    /*Create a label below the slider*/
+    /*Create a label above the slider*/
     label = lv_label_create(lv_scr_act());
     lv_label_set_text(label, "0");
     lv_obj_align_to(label, slider, LV_ALIGN_OUT_TOP_MID, 0, -15);    /*Align top of the slider*/

examples/get_started/lv_example_get_started_3.py

@@ -14,7 +14,7 @@ slider.set_width(200)                                              # Set the wid
 slider.center()                                                    # Align to the center of the parent (screen)
 slider.add_event_cb(slider_event_cb, lv.EVENT.VALUE_CHANGED, None) # Assign an event function
 
-# Create a label below the slider
+# Create a label above the slider
 label = lv.label(lv.scr_act())
 label.set_text("0")
 label.align_to(slider, lv.ALIGN.OUT_TOP_MID, 0, -15)               # Align below the slider