Update the API documentation (#5178)

- Minor fixes, typos, version numbers, etc.
 - Followup fix after "Merge Promise Guard with ESNEXT #4725"
 - Added documentation for the new implemented API functions

JerryScript-DCO-1.0-Signed-off-by: Laszlo Lango laszlo.lango@h-lab.eu

jerry-core/api/jerry-module.c

@@ -237,7 +237,7 @@ jerry_module_resolve (const jerry_value_t specifier, /**< module specifier strin
  */
 void
 jerry_module_cleanup (const jerry_value_t realm) /**< if this argument is object, release only those modules,
-                                                  *   which realm value is equal to this argument. */
+                                                  *   whose realm value is equal to this argument. */
 {
 #if JERRY_MODULE_SYSTEM
   jerry_module_free ((jerry_module_manager_t *) jerry_context_data (&jerry_module_manager), realm);

jerry-core/api/jerryscript.c

@@ -4295,7 +4295,7 @@ jerry_object_set_native_ptr (jerry_value_t object, /**< object to set native poi
 } /* jerry_object_set_native_ptr */
 
 /**
- * Checks wether the argument object has a native poitner set for the specified native type info.
+ * Checks whether the argument object has a native pointer set for the specified native type info.
  *
  * @return true if the native pointer has been set,
  *         false otherwise