PM: EM: Documentation: Fix typos in example driver code

Fix the API name to free the allocated table in the example driver code
that modifies the EM. Also fix the passing of correct table when
updating the cost.

Signed-off-by: Atul Kumar Pant <atulpant.linux@gmail.com>
Link: https://patch.msgid.link/20250511071141.13237-1-atulpant.linux@gmail.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Author: Atul Kumar Pant

Documentation/power/energy-model.rst

@@ -381,17 +381,17 @@ up periodically to check the temperature and modify the EM data::
   26		rcu_read_unlock();
   27
   28		/* Calculate 'cost' values for EAS */
-  29		ret = em_dev_compute_costs(dev, table, pd->nr_perf_states);
+  29		ret = em_dev_compute_costs(dev, new_table, pd->nr_perf_states);
   30		if (ret) {
   31			dev_warn(dev, "EM: compute costs failed %d\n", ret);
-  32			em_free_table(em_table);
+  32			em_table_free(em_table);
   33			return;
   34		}
   35
   36		ret = em_dev_update_perf_domain(dev, em_table);
   37		if (ret) {
   38			dev_warn(dev, "EM: update failed %d\n", ret);
-  39			em_free_table(em_table);
+  39			em_table_free(em_table);
   40			return;
   41		}
   42